Geometrical Optics – Online MCQs – Physics 10th

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

2. The inner part of the fibre optics which carries light is called:

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

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

5. The short-sightedness can be corrected by using:

6. In the photograph enlarger, the object is placed:

7. Which one of these has the largest refractive index?

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

9. The angle of incidence that causes the refracted ray in the rarer medium to bend through 90° is called the:

10. In a telescope, as compared to an eye piece, the objective lens has a focal length:

11. The human eye acts like a:

12. In this eye defect, the image of a distant object is formed in front of the retina and not at the retina itself.

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

14. Which statement is correct?

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

16. In the camera the distance between lens and film is fixed and is equal to:

17. In the optic fiber, the core is made of glass or plastic of relatively:

18. Concave lens is also called:

19. The ratio of the sine angle of incidence to the sine angle of refraction gives us a constant called the:

20. An optical fiber comprises: