Optics Question 807
Question: A ray of light is incident on a thick slab of glass (thickness t) as shown below. The emergent ray is parallel to the incident ray but displaced. Sideways by a distance d. If the angles are small then d is:
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: C
Solution:
[c] The lateral displacement is given by
For small angle f, angle r is also small, and so
