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(i) Describe briefly, with the help of suitable diagram, how the transverse nature of light can be demonstrated by the phenomenon of polarization. (ii) When unpolarized light passes from air to a transparent medium, under what condition does the reflected light get polarized ? |
Answer» Solution :(i)  When a polaroid `P_(1)` is rotated in the path of an unpolarised light there is no change in TRANSMITTED INTENSITY. The light transmitted through polaroid `P_(1)` is made to pass through polaroid `P_(2)`. On rotating polaroid `P_(2)` in path of light transmitted from `P_(1)` we notice change in intensity of transmitted light. This shows that light transmitted from `P_(1)` is polarized. Since light can be polarized, it has transverse nature. (ii) Whenever the reflected and REFRACTED rays are perpendicular to each other. |
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