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Electromagnetism
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | Totally reflecting prism is used in: |
<p class="MsoNormal">Periscope<o:p></o:p></p> <p class="MsoNormal">Binoculars<o:p></o:p></p> <p class="MsoNormal">Periscope and binocular<o:p></o:p></p> <p class="MsoNormal">Telescope<o:p></o:p></p> |
| 2 | In totally reflecting prism one angle is of 90°, and other
two angles are of: |
<p class="MsoNormal">30°,30°<o:p></o:p></p> <p class="MsoNormal">45°,90°<o:p></o:p></p> <p class="MsoNormal">45°,45°<o:p></o:p></p> <p class="MsoNormal">40°,40°<o:p></o:p></p> |
| 3 | In totally reflecting prism one angle is of: |
<p class="MsoNormal">45°<o:p></o:p></p> <p class="MsoNormal">90°<o:p></o:p></p> <p class="MsoNormal">180°<o:p></o:p></p> <p class="MsoNormal">120°<o:p></o:p></p> |
| 4 | To see from submarine and the ship at the surface of water,
we use: |
<p class="MsoNormal">Telescope<o:p></o:p></p> <p class="MsoNormal">Microscope<o:p></o:p></p> <p class="MsoNormal">Periscope<o:p></o:p></p> <p class="MsoNormal">Prism<o:p></o:p></p> |
| 5 | The angle at which prism deviates the incident ray is
called: |
<p class="MsoNormal">Angle of incident<o:p></o:p></p> <p class="MsoNormal">Angle of reflection<o:p></o:p></p> <p class="MsoNormal">Angle of deviation<o:p></o:p></p> <p class="MsoNormal">Angle of minimum deviation<o:p></o:p></p> |
| 6 | The minimum value of angle of deviation is called: |
<p class="MsoNormal">Minimum angle<o:p></o:p></p> <p class="MsoNormal">Incident angle<o:p></o:p></p> <p class="MsoNormal">Angle of minimum deviation<o:p></o:p></p> <p class="MsoNormal">None of these<o:p></o:p></p> |
| 7 | The refracted light striking to the side of prism is called: |
<p class="MsoNormal">Refracted ray<o:p></o:p></p> <p class="MsoNormal">Incident ray<o:p></o:p></p> <p class="MsoNormal">Reflected ray<o:p></o:p></p> <p class="MsoNormal">Emergent ray<o:p></o:p></p> |
| 8 | When a ray of light enters from denser medium to rare
medium, the angle of incidence for which angle of refraction is 90° is called: |
<p class="MsoNormal">Angle of incidence<o:p></o:p></p> <p class="MsoNormal">Critical angle<o:p></o:p></p> <p class="MsoNormal">Angle of refraction<o:p></o:p></p> <p class="MsoNormal">Angle of deviation<o:p></o:p></p> |
| 9 | Bouncing back of light after striking the surface is called: |
<span style="font-size:11.0pt;line-height:107%; font-family:"Calibri",sans-serif;mso-ascii-theme-font:minor-latin;mso-fareast-font-family: Calibri;mso-fareast-theme-font:minor-latin;mso-hansi-theme-font:minor-latin; mso-bidi-font-family:Arial;mso-bidi-theme-font:minor-bidi;mso-ansi-language: EN-US;mso-fareast-language:EN-US;mso-bidi-language:AR-SA">Refraction</span> <p class="MsoNormal">Reflection<o:p></o:p></p> <p class="MsoNormal">Diffraction<o:p></o:p></p> <p class="MsoNormal">Interference<o:p></o:p></p> |
| 10 | Spherical mirrors are used in: |
<p class="MsoNormal">Medical<o:p></o:p></p> <p class="MsoNormal">Search light<o:p></o:p></p> <p class="MsoNormal">Microscope<o:p></o:p></p> <p class="MsoNormal">All of these<o:p></o:p></p> |
| 11 | The ray of light after reflection from concave mirror passes
through: |
<p class="MsoNormal">Centre<o:p></o:p></p> <p class="MsoNormal">Principal focus<o:p></o:p></p> <p class="MsoNormal">Pole<o:p></o:p></p> <p class="MsoNormal">Radius<o:p></o:p></p> |
| 12 | The line which passes through pole of the mirror and center
of curvature is called principal: |
<p class="MsoNormal">Axis<o:p></o:p></p> <p class="MsoNormal">Focus<o:p></o:p></p> <p class="MsoNormal">Line<o:p></o:p></p> <p class="MsoNormal">None of these<o:p></o:p></p> |
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