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 QuestionIn 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]

AddThis Website Tools
admin:

Related Questions

  1. A series L-C-R circuit contains inductance 5 mH, capacitance 2 μF and resistance
  2. A dynamo converts
  3. A particle with charge q is moving along a circle of radius R with unoform speed v.
  4. The potential energy of a simple harmonic oscillator when the particle is half way
  5. A p-n-p transistor is used in common emitter mode in an amplifier circuit.