Question

explain with a diagram refraction of light through a glass slab​

Answer 1

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Refraction through a rectangular glass slab and principle of reversibility of light: On entering the glass slab, it bends towards normal and travels along EF at an angle of refraction r. ... The refracted ray EF is incident on face SR at an angle of incidence r'.

Answer 2

Answer:

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Refraction through a rectangular glass slab and principle of reversibility of light: On entering the glass slab, it bends towards normal and travels along EF at an angle of refraction r. ... The refracted ray EF is incident on face SR at an angle of incidence r'.