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Physics 10th Class English Medium Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | 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> |
| 2 | 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> |
| 3 | 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> |
| 4 | The mirror whose outer surface is reflecting is called: |
<p class="MsoNormal">Concave mirror<o:p></o:p></p> <p class="MsoNormal">Convex mirror<o:p></o:p></p> <p class="MsoNormal">Mirror<o:p></o:p></p> <p class="MsoNormal">Lens<o:p></o:p></p> |
| 5 | The mirror whose inner surface is reflecting is called: |
<p class="MsoNormal">Concave mirror<o:p></o:p></p> <p class="MsoNormal">Convex mirror<o:p></o:p></p> <p class="MsoNormal">Mirror<o:p></o:p></p> <p class="MsoNormal">Lens<o:p></o:p></p> |
| 6 | 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> |
| 7 | 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> |
| 8 | 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> |
| 9 | 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> |
| 10 | 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> |
| 11 | 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> |
| 12 | 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> |
