When light of wavelength is incident on an equilateral prism kept in its…
PHYSICS · Single correct · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
When light of wavelength λ is incident on an equilateral prism kept in its minimum-deviation position, it is found that the angle of deviation equals the angle of the prism. The refractive index of the prism material for wavelength λ is
(1) 3
(2) 23
(3) 2
(4) 2