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प्रश्न
As light from a far off star comes down towards the earth:
(a) it bends away from the normal
(b) it bends towards the normal
(c) it does not bend at all
(d) it is reflected back
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उत्तर
it bends towards the normal
As the light from a far-off star comes towards the earth, it bends towards the normal because the air is denser closer to the surface of the earth.
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