Question

For a prism, the refracting angle A=4º and
µ =1.54. this is combined with another prism of
refracting angle A' and µ '=1.72 to produce
dispersion without deviation. What will be the
value of A'?
A) 4º
B) 3º
C) 2º
D) 1º

PLEASE GIVE CORRECT ANSWER !!
I WILL MARK IT AS BRAINLIEST!!

Answer 1

Answer:

B) 3° . kindly go through explanation