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  • (a) Good quality sunglasses made of polaroids are preferred over ordinary coloured glasses. Explain why. (b) How is plane-polarized light is defined? (c) A beam of plane polarised light is passed through a polaroid. Show graphically

(a) Good quality sunglasses made of polaroids are preferred over ordinary coloured glasses. Explain why.

(b) How is plane-polarized light is defined?

(c) A beam of plane polarised light is passed through a polaroid. Show graphically, the variation of the intensity of the transmitted light with angle of rotation of polaroid.

 

 

Answers (1)

(a)  polarised sunglasses are always preferred over coloured sunglasses because polaroid sunglasses contain a special filter that reduces the intensity of light.

(b) Light in which the vibrations of electric field vector are restricted to only one plane containing the direction of propagation of light is called plane polarised light.

(c) The graph showing the variation of the intensity (I) of light with the angle of rotation (\theta) of the polaroid.

 

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Safeer PP

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