An air bubble in a glass slab of 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 of the slab is,
A. 8 cm
B. 10 cm
C. 12 cm
D. 16 cm
Answer:C
An air bubble in a glass slab of 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 of the slab is,
A. 8 cm B. 10 cm C. 12 cm D. 16 cm