A glass tumbler having inner depth of 17.5cm is kept on a table. A student starts pouring water 
into it while looking at the surface of water from the above. When he feels that the tumbler is half filled, he stops pouring water. Up to what height, the tumbler is actually filled?
Text Solution
Verified by ExpertsThe correct answer is:
B
Height of water observed by observer
Height of air observed by observer = 17.5-H
According to question, both heights observed by observer is same.
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