MHT CET202526 Apr 2025Evening ShiftPhysicsWave OpticsActual
The polarising angle of transparent medium is ' '. Let the speed of light in the medium be ' V '. Then the relation between ' ' and ' V ' is [ C = velocity of light in air]
Options
- A= ⁻¹ ( v c )
- B= ⁻¹ ( v c )
- C= ⁻¹ ( v c )
- D= ⁻¹ ( v c )
Correct answer
C. = ⁻¹ ( v c )
Step-by-step solution
Brewster's law gives the polarizing angle in terms of the refractive index as ( ) = n , where n is defined by the ratio of speeds of light in vacuum and medium: n = C V . Substituting this relation yields ( ) = C V . Inverting both sides and applying the identity ⁻¹(a) = ⁻¹( 1 a ) gives = ⁻¹ ( V C ) . This corresponds to option C .