A light ray travelling in air enters obliquely into water.Will it bend towards or away from the normal?
Answers
Since, the speed of the light in the water is lesser than that of the speed of light in the air. Hence, the water is more denser than the air. So, when the light is entering obliquely into the water from the air, it will bend towards the normal. The refractive index of water is greater than the refractive index of the air.
The angle of incidence will be bigger than angle of refraction.
Explanation:
The ray of light bends towards the normal. When a ray of light enters from an optically rarer medium (having low refractive index) to an optically denser medium (having high refractive index), its speed slows down and it bends towards the normal. Since water is optically denser than air, a ray of light entering from air into water will bend towards the normal.