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# A small air bubble is situated in a glass slab of 24 cm thickness. When viewed from one face, its apparent depth is 10 cm and when viewed from the opposite face it is 6 cm. Calculate the refractive index of the glass slab

Arun
25763 Points
3 years ago
Dear Harshit

Actual depth from first side =10 $\mu$
Actual depth from second side = 6$\mu$

Hence
10 $\mu$+ 6$\mu$ = 24
$\mu$ = 1.5

Regards