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: Exercise:1. Which colour deviate minimum during the dispersion of light through a prism ?2. If angle of incident increases angle of deviation decreases, but after a certain value of angle ofincident, the angle of deviation increases. What is that specific value of angle of incident called?Does these angles same for light of all colour?

Answer»

1)As thewhite light, consisits of seven colours in which thevioletcolour has least wavelength andredcolour has the maximum wavelength. Soviolet colouredlightdeviates the most and theredcolouredlightdeviates the least among the sevencomponent coloursof thewhite lightwhenwhite lightis dispersed.



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