Question

Explain the following:

a) A coin is placed at the bottom of a vessel appears to be raised when water is poured in the vessel.

b) The sun is seen before the sunset and after the sunset

Answer 1

Explanation:

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The ray of light starting from A (denser) medium bends away from the normal. Due to Refraction of light the coin appears at B at a lower depth. Hence in the same way the depth of water appear to be less deep.

Answer 2

Answer:

A

The ray of light starting from A (denser) medium bends away from the normal. Due to the Refraction of light, the coin appears at B at a lower depth. Hence, in the same way, the depth of water appears to be less deep.

B

This is because of the refraction of the light from the Sun by the Earth's atmosphere--the Earth's atmosphere bends the path of the light so that we see the Sun in a position slightly different from where it really is.