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CBSE

Subject

Physics

NEET Physics : Ray Optics and Optical Instruments

Multiple Choice Questions

221.

A ray of light is incident at an angle i on a glass slab of refractive index µ. The angle between reflected and refracted light is 90°. Then, the relationship between i and µ is

$i = \tan^{- 1} (\frac{1}{μ})$
tan i = µ
sin i = µ
cos i = µ

222.

When light is refracted from a surface, which of its following physical parameters does not change ?

Velocity
Amplitude
Frequency
Wavelength

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