Question

A beam of monochromatic light passes through two glass slabs of the same geometrical thickness at
normal incidence. The refractive index of the first slab is 1.5 and that of the second, 2.0. The ratio
of the time of passage of the beam through the first to the second slab is __________ .

Answer 1

3:4

3/4=1. 5/2. 0

Hope the answer is good