MHT CET 2024 Physics question
Some water is filled in a container of height 30 cm. If it is appear half filled to the observer when viewed from the top of the container, the height upto which water should be filled in it, [Refractive index of water = ]
Answer: (C)
Solution
Looking vertically down into water of real depth , the apparent depth is . The container looks half filled when the apparent depth of the water equals half the container height: cm. Hence
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