Which of the following effect is not related to refraction ?

A light ray incident on curved surface travelling from rarer medium to denser medium bends ………… the normal.

If i and r be the angles of incidence and refraction respectively, when the light ray travels from glass to air, then

If the refractive index of transparent material is $\frac{3}{2}\backslash frac\{3\}\{2\}$ the speed of light in that medium (in ip/s) is ……

When light enters from air to a medium “X” its speed becomes  $2\times 10^{8}m{s}^{-1}2\backslash times10^8ms^\{-1\}$ , then refractive index of the medium ‘X’ is ………

If n is the refractive index of a medium and v is the velocity of light in that medium, then which one of the following statements is correct ?

The angle of refraction of a light ray is the angle between …………

The extent of the change in the direction that takes place when a light ray travels from one medium to another is given by……

The refractive index of a material is 1. If the speed of light in vacuum is $3\times 10^{8}m{s}^{-1}3\backslash times10^8ms^\{-1\}$ ms then the speed of light in that material is ………

Speed of light is almost half of the vacuum in which of the following ?

Kerosene is optically ……… than water

In which of the following case a light ray does not deviate from its path at the interface of two media ?

$n_{air}=1n\_\{air\}=1$,c = 30° (glass – air), the n for glass is …………

Speed of light in a medium is ……… than in vacuum.

Speed of light in vacuum is “c” and n = 3/2 then the speed of light in medium is ………