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प्रश्न
Light travelling from a denser medium to a rarer medium along a normal to the boundary:
(a) is refracted towards the normal
(b) is refracted away from the normal
(c) goes along the boundary
(d) is not refracted
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उत्तर
is not refracted
When a ray of light travels along the normal incident on the surface, it is not refracted.
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