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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.
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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