Geometrical Optics – Online MCQs – Physics 10th

1. The defect in which the image is formed beyond the retina is called:

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

3. Magnification = ?

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

5. Concave lens is also called:

6. The quantity which does not change during refraction is:

7. A magnifying glass forms:

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

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

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

11. In the normal human eye, the image is formed:

12. The long-sightedness can be corrected by using:

13. Lenses form images through:

14. An optical fiber comprises:

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

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

17. The focus lies behind the mirror in:

18. The human eye acts like a:

19. A magnifying glass forms an enlarged:

20. Power of a lens is defined as the reciprocal of its: