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???
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Answer 1

Answer:

Explanation:

When a ray of light travels from air into water obliquely, it bends towards the normal. This is because water is optically denser than air. On entering water, speed of light decreases and the light bends towards normal.

Answer 2

Answer:

The light ray bend towards the normal.

Explanation:

Water is optically denser than air.

Therefore when light travels form rarer medium to denser medium, speed of light decreases and it bends towards the normal.