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(i) Describe briefly, with the help of s...

(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 ?

Text Solution

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(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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