Geometrical Optics – Online MCQs – Physics 10th

1. Tick the correct mirror equation:

2. They are often used as rear-view mirrors or wing mirrors in vehicles, also called driver mirrors.

3. One of the angles of a right-angled prism is

4. For a diverging lens the focal length is:

5. A magnifying glass forms an enlarged:

6. The convex lens becomes a magnifying glass when:

7. The power of a lens is measured in:

8. The outer concentric shell of the fibre optics is called:

9. The nature, position, and size of the image formed by a convex lens depend on the position of the object about point/s:

10. A spherical mirror whose inner curved surface is reflecting is called:

11. Scientists believe that a human with a normal eye and regular vision can see the tiniest objects as small as about 0.1 millimeters,

12. The entire light is reflected into the same denser medium, which is called total:

13. The human eye uses a convex lens system to form a:

14. A ray of light incident at an angle to the normal bends towards the normal when it enters into an optically:

15. The ciliary muscles of the eye control the:

16. When the angle of refraction is 90° and the refractive index for water is 1.33, the critical angle is:

17. A ray of light perpendicular to the glass slab or along the normal is:

18. The inner part ‘core’\ of an optical fibre is coated with another material called “cladding” which has:

19. The size of the image is always smaller than the object in:

20. A magnifying glass forms: