An object lies in front of a thick parallel glass slab, the bottom ... VIDEO
An object lies in front of a thick parallel glass slab, the bottom of which is polished. If the distance between first two images formed by bottom surface is \( 4 \mathrm{~cm} \) then find the thickness of the slab.
[Assume \( n_{\text {glass }}=3 / 2 \) and paraxial rays \( ] \)
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