A ray of light travelling inside a rectangular glass block `(mu=sqrt2)` is incident on the glass-air surface at an angle of incidence of `45^@`. The refractive index of air is 1. The ray willA. will be absorbed by the glass slabB. will travel in air without any deviationC. will travel parallel to the interface i.e., the angle of refraction will be ` 90^(@)`D. will be reflected back in glass

A ray of light travelling inside a rectangular glass block `(mu=sqrt2)

1.	A ray of light travelling inside a rectangular glass block `(mu=sqrt2)` is incident on the glass-air surface at an angle of incidence of `45^@`. The refractive index of air is 1. The ray willA. will be absorbed by the glass slabB. will travel in air without any deviationC. will travel parallel to the interface i.e., the angle of refraction will be ` 90^(@)`D. will be reflected back in glass
Answer» Correct Answer - C It is incident at the critical angle `n=(1)/(sin C)=sqrt(2)`.

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