1. Light is incident from medium A to medium B then the refracted light goes toward the normal line. How can we
compare the speed of light in medium B with that in medium A?

A. The speed of light in B is slower than that A.
C. The speed of light in B is faster than that in A.
B. The speed of light in B is the same as that in A.
D. The speed of light in B varries than that in A.

2. Which is responsible for the blue sky and the red sunset?

A. diffraction
B. dispersion
C. reflection
D. refraction

3. Which of the following is the phenomenon that occurs when white light strikes a transparent material?

A. blue sky
B. rainbow
C. red sunset
D. refractional
​