In vacuum, to travel distance d, light takes time t and in medium to travel distance

In Vacuum To Travel Distance D Light Takes Time T Physics Question

In vacuum, to travel distance d, light takes time t and in medium to travel distance 5d, it takes time T. The critical angle of the medium is

Options

(a) sin⁻¹(5T/t)
(b) sin⁻¹(5t/3T)
(c) sin⁻¹(5t/T)
(d) sin⁻¹(3t/5T)

Correct Answer:

sin⁻¹(5t/T)

Explanation:

In vacuum, c = d / t

In medium, v = 5d / T

As refractive index , μ = c / v = (d/t) / (5d/T) = T / 5t

Also, sin C = 1 / μ [If C is critical angle]

Therefore, C = sin⁻¹ [5t / T]

Related Questions:

  1. There are four light-weight-rod samples A,B,C,D seperately suspended by threads
  2. A disc of radius 0.1 m is rotating with a frequency 10 rev/sec in a normal magnetic
  3. A source of sound of frequency 256 Hz is moving rapidly towards a wall with a velocity
  4. The Davisson- Germer experiment is the direct evidence of
  5. The molecular weight of a gas is 44. The volume occupied by 2.2 g of this gas

Topics: Ray Optics (94)
Subject: Physics (2479)

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

NEETLab Mobile App

Share this page with your friends

Be the first to comment

Leave a Reply

Your email address will not be published.


*