Question

A boy holds a laser pointer at the bottom of a pond and the light ray makes an angle to the surface

i) 35° ii) 40° iii) 49°.

In which case the light ray does not cross the surface of water ? Why?​

Answer 1

Answer:

49

Explanation:

It's because the critical angle of water is 48.6 if the incident angle is equal to the critical angle it grazes along the surface so answer is 48.6 which is approximately equal to critical angle

Answer 2

Answer:

The answer is 49°. Because the crtical angle of water is 48.6 if the incident angle is equal to the critical angles it grazes along the surface. So, answer is 48.6 which is approximately equal to critical angle.

Explanation:

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