Question

what is rectangular glass slab​

Answer 1

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Explanation:

Refraction through a rectangular glass slab and principle of reversibility of light: Consider a rectangular glass slab, as shown in figure. ... 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

Rectangular glass slab is a substance made of glass..It doesn't deviate the light..

The tiny pores on surface of leaves are known as stomata....

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