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A ray of light travelling from glass to air (refractive index of glass=1.5). The angle of incidence is The deviation of the ray is

a)

b)

c)

d)



Question ID - 152634 | SaraNextGen Top Answer

A ray of light travelling from glass to air (refractive index of glass=1.5). The angle of incidence is The deviation of the ray is

a)

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (b) -

(b)

Refractive index,

Critical angle for glass

When the angle of incidence in the denser medium is greater than the critical angle, reflection takes place inside the denser medium.

Hence, a ray of light incident at  in glass medium undergoes total internal reflection.

Deviation

(from the figure)

Or      

127 votes


127