Q. 305.0( 1 Vote )

# Light is incident from glass (μ = 1.50) to water (μ = 1.33). Find the range of the angle of deviation for which there are two angles of incidence. Refractive index of glass is Refractive index of water is Critical Angle= According to the question:

There will be two angles of incidence:

(1) When light ray passes through the normal

Angle of incidence = Angle of refraction= Angle of deviation = (2) When light ray incident at critical angle  (As light ray is passing from glass to water)    Angle of deviation= = = If angle of incidence increases beyond critical angle, total internal reflection will occur. So, the range of angle of deviation is Rate this question :

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