The angle of a prism is A. One of its refracting surfaces is silvered

The angle of a prism is A. One of its refracting surfaces is silvered. Light rays falling at an angle of incidence 2A on the first surface returns back through the same path after suffering reflection at the silvered surface. The refractive index μ, of the prism is

Options

(a) 2 sin A
(b) 2 cos A
(c) 1/2 cos A
(d) tan A

Correct Answer:

2 cos A

Explanation:

No explanation available. Be the first to write the explanation for this question by commenting below.

admin:

Related Questions

  1. If an electron and a proton have the same de-Broglie wavelength, then the kinetic
  2. Two small spherical shells A and B are given positive charges of 9C and 4C
  3. The time period of bar magnet is doubled when magnetic field is reduced
  4. The distance travelled by an object along a straight line in time t is given by
  5. Two particles of masses m₁ m₂ move with initial velocities u₁ and u₂