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The variation of refractive index of a crown glass thin prism with wavelength of the incident light is shown. Which of the following graphs is the correct one, if D_ m is the angle of minimum deviation?

Correct answer

0

Step-by-step solution

When angle of prism is small, then angle of deviation is given by D _ m =( -1) A So, if wavelength of incident light is increased, decreases and hence D _ m decreases.

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