Question

GV GRAVITY ACADEMY 2
Light of wavelength 4000 A is incident at small angle on a prism of apex angle 4º. The prism has
n = 1.5 & n = 1.48. The angle of dispersion produced by the prism in this light is:
(A) 0.20
(B) 0.080
(C) 0.1920
(D) none of these​

Answer 1

Hey Dear,

◆ Answer -

(B) δ = 0.08°

● Explanation -

# Given -

nv = 1.5

nr = 1.48

A = 4°

λ = 4000 Å

# Solution -

Angle of dispersion made by the prism is given by -

δ = (nv - nr) A

δ = (1.5 - 1.48) × 4

δ = 0.08°

Therefore, angle of dispersion for the prism will be 0.08°.

Hope this was helpful to you. Thanks for asking...

Answer 2

Answer:

D

Explanation:

dispersion is not possible for monochromatic light