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Physics 10th Class English Medium Unit 5 Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | The distance between principal focus and pole of mirror is
called: |
<p class="MsoNormal">Principal focus<o:p></o:p></p> <p class="MsoNormal">Focal length<o:p></o:p></p> <p class="MsoNormal">Aperture<o:p></o:p></p> <p class="MsoNormal">Image<o:p></o:p></p> |
| 2 | The point through which rays of light pass after reflection
from concave mirror is called principal: |
<p class="MsoNormal">Focus<o:p></o:p></p> <p class="MsoNormal">Circle<o:p></o:p></p> <p class="MsoNormal">Axis<o:p></o:p></p> <p class="MsoNormal">Radius<o:p></o:p></p> |
| 3 | Half of radius of curvature is called: |
<p class="MsoNormal">Focal length<o:p></o:p></p> <p class="MsoNormal">Principal focus<o:p></o:p></p> <p class="MsoNormal">Axis<o:p></o:p></p> <p class="MsoNormal">Aperture<o:p></o:p></p> |
| 4 | The center of curved surface of spherical mirror is called: |
<p class="MsoNormal">Focus<o:p></o:p></p> <p class="MsoNormal">Axis<o:p></o:p></p> <p class="MsoNormal">Centre<o:p></o:p></p> <p class="MsoNormal">Pole<o:p></o:p></p> |
| 5 | The diameter of spherical mirror is called: |
<p class="MsoNormal">Curvature<o:p></o:p></p> <p class="MsoNormal">Aperture<o:p></o:p></p> <p class="MsoNormal">Sphere<o:p></o:p></p> <p class="MsoNormal">Both a and b<o:p></o:p></p> |
| 6 | The critical angle for a beam of light passing from water
into air is 48.8 degrees. This mean that all light rays with an angle of
incidence greater than this angle will be: |
<p class="MsoNormal">Absorbed<o:p></o:p></p> <p class="MsoNormal">Totally reflected<o:p></o:p></p> <p class="MsoNormal">Partially reflected and partially transmitted<o:p></o:p></p> <p class="MsoNormal">Totally transmitted<o:p></o:p></p> |
| 7 | If a ray of light in glass is incident on an air surface at
an angle greater than the critical angle, the ray will: |
<p class="MsoNormal">Refract only<o:p></o:p></p> <p class="MsoNormal">Reflect only<o:p></o:p></p> <p class="MsoNormal">Partially refract and partially reflect<o:p></o:p></p> <p class="MsoNormal">Diffract only<o:p></o:p></p> |
| 8 | Image formed on a camera is: |
<p class="MsoNormal">Real, inverted, and diminished<o:p></o:p></p> <p class="MsoNormal">Virtual, upright and diminished<o:p></o:p></p> <p class="MsoNormal">Virtual, upright and magnified<o:p></o:p></p> <p class="MsoNormal">Real, inverted and magnified<o:p></o:p></p> |
| 9 | Which type of image is produced by the converging lens of
human eye if it views a distant object: |
<p class="MsoNormal">Real, erect, same size<o:p></o:p></p> <p class="MsoNormal">Real, inverted, diminished<o:p></o:p></p> <p class="MsoNormal">Virtual, erect, diminished<o:p></o:p></p> <p class="MsoNormal">Virtual, inverted, magnified<o:p></o:p></p> |
| 10 | Which type of image is formed by a convex lens on a screen: |
<p class="MsoNormal">Inverted and real<o:p></o:p></p> <p class="MsoNormal">Inverted and virtual<o:p></o:p></p> <p class="MsoNormal">Upright and real<o:p></o:p></p> <p class="MsoNormal">Upright and virtual<o:p></o:p></p> |
| 11 | The index of refraction depends on: |
<p class="MsoNormal">The focal length<o:p></o:p></p> <p class="MsoNormal">The speed of light<o:p></o:p></p> <p class="MsoNormal">The image distance<o:p></o:p></p> <p class="MsoNormal">The object distance<o:p></o:p></p> |
| 12 | An object is 14 cm in front of a convex mirror. The image is
5.8 cm behind the mirror. What is the focal length of the mirror: |
<p class="MsoNormal">-4.1 cm<o:p></o:p></p> <p class="MsoNormal">-8.2 cm<o:p></o:p></p> <p class="MsoNormal">-9.9 cm<o:p></o:p></p> <p class="MsoNormal">-20 cm<o:p></o:p></p> |
