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Question
Sun appears to be risen before the actual sunrise because of:
Sun appears to be risen before the actual sunrise because of:
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Solution
The correct option is C Atmospheric refraction
The sun seems to rise two minutes before the actual sunrise due to the phenomenon of atmospheric refraction.
When the sun is just below the horizon, the light from the sun, while coming towards the earth, suffers refraction from a rarer to a denser layer and so it bends towards the normal at each refraction. Due to the continuous bending of light at different successive layers, the sun can be seen even when its actual position is just below the horizon.
The sun seems to rise two minutes before the actual sunrise due to the phenomenon of atmospheric refraction.
When the sun is just below the horizon, the light from the sun, while coming towards the earth, suffers refraction from a rarer to a denser layer and so it bends towards the normal at each refraction. Due to the continuous bending of light at different successive layers, the sun can be seen even when its actual position is just below the horizon.
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