Refraction of lights differs from reflection in that, in refraction i. at least two media are involved ii. there is a change in the direction of the ray iii. the speed of the ray changes. Which of the statements above is/are correct?
A
i only
B
i ad ii only
C
ii and iii only
D
i and iii only
Verified Correct Answer: D.
Physical Principles & Numerical Solution
At least two media are involved: True for refraction.
There is a change in the direction of the ray: True for both refraction and reflection.
The speed of the ray changes: True only for refraction.
Source: Myschool Past Questions Archive (Record #35762)