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प्रश्न
During sunset and sunrise, the sun is seen when it is slightly below the horizon. Give reason.
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उत्तर
Light rays from the sun while coming towards earth suffers successive refractions from a rarer to a denser medium and so it bends towards the normal at each refraction. These rays on earth appear to be coming from an apparent position of the sun which is higher than its actual position. Thus, the sun is seen even when it is slightly below the horizon during sunset and sunrise.
संबंधित प्रश्न
The refractive index of air with respect to glass is expressed as `""_g μ_a=sin i /sin r`.
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What is the angular, deviation of the emergent ray from the glass block with respect to the incident ray?
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