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 (given that aμω=43)
A
8.0 cm
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B
10.5 cm
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C
12.0 cm
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D
None of the above
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Solution
The correct option is C 12.0 cm To see the container half-filled from top, water should be filled up to height x so that bottom of the container should appear to be raised upto height (21–x). As shown in figure apparent depth h'=(21 -x) Real depth h =x