When a ray of light passes from one medium to other, it bends from its path. This phenomenon of bending of light is called as refraction of light. There are two laws of refraction one is the incident ray, the refracted ray and the normal at the point of incidence all lie in the same plane and the other one is the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant for a given medium. Can you pass this test on the refraction of light?
1. Who gave the law of refraction of light?
A. Robert Hook
B. Morgan
C. Willebrord Snell
D. Miller
2. How many types of the convex lens?
A. 2
B. 3
C. 4
D. 5
3. When light passes from rarer medium to denser medium, it bends ..... the normal at a point of incidence.
A. Away
B. Near
C. Towards
D. None of the above
4. When light passes from a .... medium to a rarer medium, it bends away from the normal.
A. Denser
B. Lighter
C. Closer
D. Far
5. Which one is the diameter of the boundary of that lens?
A. Principal of focus
B. Focal length
C. Aperture of a lens
D. None of the above
6. Which one is the line joining the two centers of curvature of the lens?
A. Aperture of a lens
B. Principal axis of a lens
C. Optical center
D. Focal length
7. What kind of image is formed when an object at infinity by the convex lens?
A. Real and inverted
B. Real and erect
C. Virtual and inverted
D. Virtual and erect
8. If a lens is cut into two parts by a plane parallel to principal axis, then the focal length of each part ....
A. Unequal
B. Remain same
C. Both of them
D. None of them
9. The transparent medium bounded by two hollow surfaces is called .....
A. Convex lens
B. Convergent lens
C. Concave lens
D. None of these
10. Which one is not a type of concave lens?
A. Bi-concave
B. Plano- concave
C. Concavo-concave
D. Simple lens
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