Ray Optics and Optical Instruments Part 1

Section: Physics

Question : 3 of 100

Marks: +1, -0

A ray of light passes from a denser medium to a rarer medium at an angle of incidence i. The reflected and refracted rays make an angle of 90° with each other. The angle of reflection and refraction are respectively r and r'. The critical angle is given by :

[22 Jul 2021 Shift 2]

sin−1 (cotr)
tan−1(sin‌i)
sin−1( tanr' )
sin−1( tanr )

Validate

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