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प्रश्न
Explain the following:
A stamp placed under glass slab appears raised.
स्पष्ट करा
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उत्तर
Light from the stamp refracts as it passes from the glass into the air, bending away from the normal. The refracted rays appear to originate from a point nearer the upper surface of the glass than the stamp’s actual position. Therefore, the stamp appears raised.
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