If speed of light in air is `3xx10^(8) m//s,` the speed of light in
glass (with refractive index 1.5) would be

Options

A. a `2xx10^(8) m//s`
B. b `4.5xx10^(8) m//s`
C. c `3xx10^(8) m//s`
D. d `1.5xx10^(8) m//s`

Answer

A

Explanation

Given that
`C=3xx10^(8)m//s, H=1.5`
then `V= C/H = (3xx10^(8))/1.5=2xx10^(8) m//s`