Question

A thin prism of refracting angle 80 produces a deviation of 4°. The refractive index of
the material of the prism is
(A) 1.33
(B) 1.5 (C) 0.5
(D) 1.25
- TCHTOT JA​

Answer 1

Answer:

deviation (δ) is given by

δ=(μ−1)A

where μ is refractive index

A is angle of prism.

from given information δ=3o;A=6o

⇒3=(μ−1)6

⇒μ=21+1=23=1.5

⇒μ=1.5