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 A vector of magnitude 5 N is added to a vector of magnitude 8 N while the orientations are changeable. Range of their possible sum will be very from: Zero to 3 N 1 N to 13 N 13 N to 3 N None of these
2 If the vector 5 N lies along with x-axis, then its component along y-axis will be: Zero 5 N 7 N 10 N
3 The rectangular components of a vector are equal in magnitude when the vector makes and angle _______with their x-component: 0<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 30<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 45<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 60<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span>
4 When the magnitude of two component vectors are equal to that of their resultant, then the angle between the components is: 60<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 90<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 120<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span> 150<span style="font-size: 10.5pt; line-height: 107%; font-family: Arial, sans-serif; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">°</span>
5 If a vector lies in second quadrant, than Bxand Byare: -,+ +,- +,+ -,-
6 Parallel vectors of same magnitudes: Are equal Are unequal When added give the some equal to zero Give the answer equal to zero
7 The direction of vector in space is specified by: One angle Two angles Three angles None of these
8 The direction of a vector in space requires: X-axis X and Y-axes XYZ axes Y and Z-axes
9 Choose the set of physical quantities, which have both numerical and directional properties: Velocity, mass Speed, acceleration acceleration weight Distance, force
10 The branch of physics which deals with the structure and properties of solids is called: Plasma physics Solid state physics Any of above Astrophysics
11 Density is defined as: Mass per volume Volume per mass Mass X volume Mass per length
12 Examples of physical quantities are: Length Color Effect of music All of these
13 In the equation E=mc2 value of c is? 186000 miles per hour 186000 miles per sec 3 X 10<sup>8</sup>m/sec Both A and C Both B and C
14 From sand, we get a material used for construction of computer chips. That material is called: Copper Lead<div><br></div> Silicon Germanium
15 From sand, we get a material used for construction with the motion of bodies under the action of forces is called: Optics Mechanics Thermodynamics Astrophysics
16 Electron is a particle whose mass is: Greater than that of a proton Smaller than of a proton and greater than mass of neutron Smaller than that of proton or neutron Greater than that of an atom
17 Physics is one of the branches of: Social sciences Physical sciences Biological sciences Abstract art
18 Branch of physics which deals with the study of stars and galaxies is called: Solid state physics Astrophysics Molecular physics Chemical physics
19 Silicon can be obtained from: Lead Uranium An isotope of oxygen Sand
20 Particles have the mass smallest of following is: Electron Proton Neutron Quark
21 The machines which deals with the objects moving with velocities approaching that of light is called: Relativistic mechanics Wave mechanics Quantum Statics mechanics
22 Astrophysics is a branch of physics, which deals with: Sub-atomic particles Stars and galaxies Light and sound Music
23 The information from far side of the universe are gathered by: Radio telescope Microscope Telescope Spectro scope
24 The study of physics involves? Structure of space and time Interaction of electromagnetic radiation with matter Both of them Chemical changes None of them
25 The quantity having dimension of ML2T02will earth is: 80 sec 500 sec 1.802 X 10<sup>4</sup>sec Aerophysics
26 Which quantity has different dimension: Work Pressure Energy Torque
27 Addition of 2.189 kg, 11.8 kg and 5.32 kg gives the rounded off answer as: 19.398 19.400 19.4 19.3
28 Significant figures in 0.0010 are: Four Three Two One
29 Which one is the least multiple: Pico Femto Nano Atto
30 1 gm-cm-3is equal to: 10<sup>3</sup>kg-m<sup>-3</sup> 10<sup>-3</sup>kg-m<sup>-3</sup> 1 kg-m<sup>-3</sup> 10<sup>6</sup>kg-m<sup>-1</sup>
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