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  •  Find the dispersion produced by a thin prism of  having refractive index for red light <

 Find the dispersion produced by a thin prism of 18^{\circ}  having refractive index for red light =1.56 and for violet light =1.68.

Option: 1

4.16^{\circ}


Option: 2

6.16^{\circ}


Option: 3

2.16^{\circ}


Option: 4

8.16^{\circ}


Answers (1)

best_answer

We know that dispersion produced by a thin prism
\mathrm{\theta=\left(\mu_{v}-\mu_{R}\right) A}

\mathrm{Here \: \mu_{v}=1.68, \mu_{R}=1.56\: and \: A=18^{\circ}}

\mathrm{\theta=(1.68-1.56) \times 18^{\circ}=2.16^{\circ}}.

Posted by

Ritika Jonwal

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