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प्रश्न
Draw a ray diagram to show that the depth of a vessel containing water when seen from above, appears to be less than its real depth.
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उत्तर
When there is no water in the vessel (a) when water is added in the vessel coin appear to be at B than actually, the coin is at A. Hence, the coin appears to be raised up in water.
i.e. its height appears to be less than actual.
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