MHT CET Medical202626 April 2026Morning ShiftPhysicsRay OpticsActual
The Brewster's angle for the air-glass interface is (54.74)^ . If a ray of light going from air to glass stikes at an angle of incidence 45^0 , then the angle of refraction is ( (54.74)^0 = 2 , 45 = 1 / 2 )
Options
- A⁻¹( 2 )
- B⁻¹ ( 1 2 )
- C⁻¹ ( 1 2 )
- D⁻¹ ( 3 2 )
Correct answer
B. ⁻¹ ( 1 2 )
Step-by-step solution
According to Brewster's law, the refractive index of the medium is given by = _B . Substituting the given Brewster's angle, = (54.74^ ) = 2 . Using Snell's law for refraction from air to glass, 1 i = r . Substituting i = 45^ and = 2 , we get 45^ = 2 r . 1 2 = 2 r r = 1 2 r = ⁻¹ ( 1 2 ) Answer: ⁻¹ ( 1 2 )