A thin prism of angle 15⁰ made of glass of refractive index µ₁ = 1.5 is combined

A Thin Prism Of Angle 15 Made Of Glass Of Physics QuestionA Thin Prism Of Angle 15 Made Of Glass Of Physics Question

A thin prism of angle 15⁰ made of glass of refractive index µ₁ = 1.5 is combined with another prism of glass of refractive index µ₂ = 1.75. The combination of the prism produces dispersion without deviation. The angle of the second prism should be

Options

(a) 7⁰
(b) 10⁰
(c) 12⁰
(d) 5⁰

Correct Answer:

10⁰

Explanation:

Deviation= 0, so ? = ?¬ツチ + ?¬ツツ = 0
(µ₁ – 1)A₁ + (µ₂ – 1)A₂ = 0
A₂(1.75 – 1) = – (1.5 – 1) 15⁰
A₂ = – 0.5 / 0.75 x 15⁰
or A₂ = – 10⁰
Negative sign shows that the second prism is inverted with respect to the first.

AddThis Website Tools
admin:

Related Questions

  1. If dimensions of critical velocity of a liquid flowing through a tube are expressed
  2. A car of mass 1000 kg negotiates a banked curve of radius 90 m on a frictionless
  3. The displacement of particle is given by x=aₒ+(a₁t/2)-(a₂t²/3) what is acceleration?
  4. If alpha, beta and gamma rays carry same momentum, which has the longest
  5. An electron of mass Mₑ, initially at rest, moves through a certain distance in a uniform