Question

Calculate the time taken by the light to travel a distance of 500 metre in water of refractive index 4/3

Answer 1

Answer:

$n = \frac{c}{v} \\ or \: \frac{4}{3} = \frac{3 \times {10}^{8} }{ \frac{500}{t} } \\ or \: t = \frac{4 \times 500}{3 \times 3 \times {10}^{8} } = 2.2 \times {10}^{ - 6}$