Physics ECAT Pre Engineering MCQ's Test For Full Book With Answers

Physics ECAT Pre Engineering MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 Another mean of electric potential energy per unit charge is given by: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Electric intensity<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Potential gradient<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Electric Flux<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Potential difference<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">None of these<o:p></o:p></span></p>
2 Tick the correct statement: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both the potential and potential difference is scalars<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Potential is a scalar but potential difference is a vector<o:p></o:p></span></p> <span style="font-family: &quot;Times New Roman&quot;, serif; font-size: 12pt;">Both are vectors</span><p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast"><o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Potential is vector but potential difference is scalar<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">None of these<o:p></o:p></span></p>
3 The surface destiny of charge is defined is: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Charge per volume<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Mass per volume<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Charge per area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Mass per area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both (B) and (C)<o:p></o:p></span></p>
4 Gaussian surface is always: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Rectangular<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Spherical<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Cylindrical<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Box shape<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Any of these<o:p></o:p></span></p>
5 A field free region is found: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Near the outer surface of a hollow charged metal sphere<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">In the interior of solid metal uncharged sphere<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">In the interior of solid metal charged sphere<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both (A) and (B)<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both (A) and (C)<o:p></o:p></span></p>
6

While finding the electric intensity at a point between two oppositely charged parallel plates, the Gaussian surface is taken in the form of a hollow:

 <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Circle<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Rectangle<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Sphere<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Box<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Cylinder<o:p></o:p></span></p>
7 The interior of a hollow charged metal sphere is a region which: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Contain some magnitude of electric field<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Is full of electric field lines<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Is field-free region<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Either (A) or (B)<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">None of these<o:p></o:p></span></p>
8 The flux through a closed surface depends upon: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Shape of geometry of the closed surface<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Charge enclosed<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Nature of the medium<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both (A) and (B)<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">Both (B) and (C)<o:p></o:p></span></p>
9

Flux through a closed surface of any shape and flux through the surface of a sphere drawn around a charge are:

 <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Different<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Same<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Such that it is greater in the first case<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Such that it is greater in the second case<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:&quot;Times New Roman&quot;;mso-fareast-theme-font: minor-fareast">None of these<o:p></o:p></span></p>
10

Certain charge +q is placed at the center of a sphere. At each of the sphere,The directions of electric intensity and vector area are:

 <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Same<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Different<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Opposite to each other<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">At 60º with each other<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Both (B) and (C)<o:p></o:p></span></p>
11 The electric flux through any surface depends upon: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Intensity of electric field<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Area of the surface<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Angle between intensity and area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">All of these<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
12 When certain area A is held parallel to the field lines, then: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">No lines cross this area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Maximum lines pass through this area<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">The number of lines are between zero and maximum<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Both (A) and (B) correct<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
13 The number of field lines passing through unit area held perpendicular to the field lines represent: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Flux in that region<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Intensity of the field<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Charge<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Area of the region<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
14

Electric flux is:

 <span style="font-family: &quot;Times New Roman&quot;, serif; font-size: 12pt;">Cross product of two vector</span><p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;"><o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Dot product of two vectors<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">A vector quantity<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">A scalar quantity<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Both (B) and (D)<o:p></o:p></span></p>
15

An inkjet printer uses in its operation:

 <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Neutrons only<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Mesons only<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Positrons and photons<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">An electric charge<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
16 An important part of inkjet printer is: <span style="font-size:12.0pt;line-height:107%; font-family:&quot;Times New Roman&quot;,&quot;serif&quot;;mso-fareast-font-family:Calibri; mso-fareast-theme-font:minor-latin;mso-ansi-language:EN-US;mso-fareast-language: EN-US;mso-bidi-language:AR-SA">Toner</span> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Drum<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Deflection plates<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Heated roles<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
17 The inkjet printer ejects a thin stream of: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Water<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Oil<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Ink<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Any of above<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
18 Aluminum is a: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Good insulator<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Bad conductor<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Both (A) and (B)<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Excellent conductor<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Semiconductor<o:p></o:p></span></p>
19 Selenium is: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">An insulator<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">A conductor<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Insulator in the dark and becomes conductor when exposed to light<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Conductor in the dark only<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
20 An important part of photocopier is: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Toner cartridge<o:p></o:p></span></p> <span style="font-family: &quot;Times New Roman&quot;, serif; font-size: 12pt;">Deflection plates</span><p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;"><o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Charging electrode<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Print head<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
21 An example of photoconductor is: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Boron<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Carbon<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Iron<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Aluminum<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Selenium<o:p></o:p></span></p>
22 Xerography means: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Dry writing<o:p></o:p></span></p> <span style="font-family: &quot;Times New Roman&quot;, serif; font-size: 12pt;">Wet writing</span><p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;"><o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Poor writing<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Excellent writing<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Both (A) and (B)<o:p></o:p></span></p>
23 Static electricity is produced by the transfer of: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Electrons<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Protons<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">One fluid<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Two fluids<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
24

Electrostatics is the branch of physics which deals with the study of electro charges:

 <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">At rest<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">At rest under the action of electric forces<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">In motion under the action of electric forces<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">In motion<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">At rest under the action of nuclear forces<o:p></o:p></span></p>
25

In case of two identical charges placed certain distance apart, the electric field lines are:

 <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Straight lines<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Sine curves<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Curved<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Both (A) and (B)<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
26 Field lines are closer to each other in the region where the field is: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Stronger<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Weaker<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Much weaker<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Absent<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of these<o:p></o:p></span></p>
27 Electric field lines emerge from the charge in: <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">One dimension<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Two dimensions<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size: 12pt; line-height: 107%; font-family: &quot;Times New Roman&quot;, serif;">Three dimensions<b><o:p></o:p></b></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">Four dimensions<o:p></o:p></span></p> <p class="MsoNormal"><span style="font-size:12.0pt;line-height:107%;font-family: &quot;Times New Roman&quot;,&quot;serif&quot;">None of them<o:p></o:p></span></p>
28 The value of relative permittivity of different dielectrics are: <p class="MsoNormal"><span style="font-family: &quot;Times New Roman&quot;, serif; font-size: 16px;">Equal</span></p> <p class="MsoNormal"><span style="font-family: &quot;Times New Roman&quot;, serif; font-size: 16px;">Different</span></p> <p class="MsoNormal"><span style="font-family: &quot;Times New Roman&quot;, serif; font-size: 16px;">Greater than one</span></p> <p class="MsoNormal"><span style="font-family: &quot;Times New Roman&quot;, serif; font-size: 16px;">Smaller than one</span></p> <p class="MsoNormal"><b><span style="font-size:12.0pt;line-height:107%;font-family:&quot;Times New Roman&quot;,&quot;serif&quot;">Both (B) and (C)<o:p></o:p></span></b></p>
29 The value of E0in coulomb's law is: 9 x 10<sup>9</sup>Nm<sup>2</sup>C<sup>-2</sup> 8.85 x 10<sup>-12</sup>C<sup>2</sup>N<sup>-1</sup>m<sup>-2</sup> 8.85 x 10<sup>-12</sup>Nm<sup>2</sup>C<sup>-2</sup> 9 x 10<sup>9</sup>C<sup>2</sup>N<sup>-1</sup>m<sup>-2</sup>
30 If the distance between two charges is doubled, the force between them will become: Double Half Three times One fourth One third
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