Questions
A thin prism having refracting angle is made of a transparent material whose refractive index for violet light is 1.6 and that for red light is 1.4. Then dispersive power of the material of the prism is
detailed solution
Correct option is B
Dispersive powerω=(μv−μrμv+μr2−1)∴ ω=(1.6−1.4)(1.6+1.42−1)=0.20.5=0.4Talk to our academic expert!
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Refractive index of a transparent material for violet light is 1.585 and that for red light is 1.485. A thin prism is made of this material and a ray of white light is incident on one refracting surface of this prism at near normal incidence. Then ratio of angle of dispersion to the mean angle of deviation is
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