Question.
A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal ? Why ?
A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal ? Why ?
solution:
The light ray bends towards the normal. This is because it enters from rarer (air) medium to denser (water) medium.
The light ray bends towards the normal. This is because it enters from rarer (air) medium to denser (water) medium.