Geometrical Optics – Online MCQs – Physics 10th

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

2. To illuminate the inaccessible places in the tooth, dentists use:

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

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

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

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

7. The power of a lens is measured in:

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

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

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

11. A ray of light bends away from the normal when it enters an optically

12. The human eye acts like a:

13. The ability to distinguish between two closely placed objects or point sources is called an instrument:

14. A magnifying glass forms:

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

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

17. A magnifying glass forms an enlarged:

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

19. The reciprocal of a lens focal length is called:

20. In a compound microscope, as compared to an objective, the eyepiece lens has a focal length: