Question

(a) A coin is placed at the bottom of beaker .The beaker is now filled half with water.

i) What do you observe about the position of coin in the beaker?

ii) Name and state the cause of this phenomenon?
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Answer 1

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RI=

apparent depth

real depth

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Substituting,

3

4

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=

apparentdepth

12

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Therefore, apparent depth=

4

12×3

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=9

The height by which it appears to be raised is 12−9=3cm

Answer 2

i) Coin will be slightly Upward while looking in the beaker

ii) refraction is the cause of this phenomenon.