Question:

An air bubble in a glass slab with refractive index 1.5 (near normal incidence) is 5 cm deep when viewed from one surface and 3 cm deep when viewed from the opposite face. The thickness (in cm) of the slab is

Options :

  • (a) 16
  • (b) 8
  • (c) 10
  • (d) 12

Answer :

(d) 12

Answer Steps :

step 1

step 2

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