Geometrical Optics – Online MCQs – Physics 10th

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

2. The focus lies behind the mirror in:

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

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

5. The ciliary muscles of the eye control the:

6. The angle of reflection and the angle of reflection are:

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

8. A compound microscope uses

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

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

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

13. For a diverging lens the focal length is:

14. Which statement is correct?

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

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

17. Tick the correct mirror equation:

18. An optical fiber comprises:

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

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