Question

how much water should be filled in a container 21 CM in height so that it appears half filled when viewed from the top of the container​

Answer 1

Explanation:

Water can be filled =28l

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Answer 2

Answer:

here is your answer

Explanation:

Let it be filled to height 'h'cm. Then the part not in water is (21-h)cm.

So the apparent depth of the filled portion must be (21-h)cm.

apparent depth

real depth

=refractive index of water

21−h

h

=1.33

h=12cm

hence, 12cm water should be filled in a container.