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 
)
Text Solution
Verified by ExpertsThe correct answer is:
C
To see the container half-filled from top, water should be filled up to height 
so that bottom of the container should appear to be raised upto height (21– x ).
As shown in figure apparent depth 
Real depth 
cm
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