Geometrical OpticsHard

Question

In the given figure ABC is a right angled isosceles prism kept in air. A ray of light is incident normally as shown. Refractive index of prism is varying with time t as μ = (1 + 0.4t), here t is in seconds. The angular velocity of the emergent ray at t = 1 second is -
         

Options

A.1.2 rad/second
B.1 rad/second
C.2 rad/second
D.1.5 rad/second

Solution

          
μ sin 45o = 1 sin θ ⇒ cos θ ⇒ sec θ
Here cos θ =    (at t= 1)
⇒ = 2 rad/second

Create a free account to view solution

View Solution Free
Topic: Geometrical Optics·Practice all Geometrical Optics questions

More Geometrical Optics Questions

The cross-section of a prism is shown in the figure. One of its refracting surfaces AC is given by y = x2. A ray of ligh...A student performed the experiment of determination of focal length of a concave mirror by u - v method using an optical...A beam of diameter ‘d’ is incident on a glass hemisphere as show. If the radius of curvature of the hemisphere is very l...A Young′s double slit experiment uses a monochromatic source. The shape of the interference fringes formed on a sc...When the object is at distance u1 and u2 image formed by the same lens real and virtual respectively and of the same siz...