Question
Question: A given ray of light suffers minimum deviation in an equilateral prism P. Additional prisms Q and R ...
A given ray of light suffers minimum deviation in an equilateral prism P. Additional prisms Q and R of identical shape and of the same material as P are now added as shown in the figure. The ray will now suffer
A
Greater deviation
B
No deviation
C
Same deviation as before
D
Total internal reflection
Answer
Same deviation as before
Explanation
Solution
No deviation occur on interfaces 2 and 3 as there is no change in medium. However deviation at interface 4 is same as it was on interface 2 with only prism P.
