Questions
If the refractive indices of crown glass for red, yellow and violet colours are 1.5140, 1.5170 and 1.5318 respectively and for flint glass these are 1.6434, 1.6499 and 1.6852 respectively, then the dispersive powers for crown and flint glass are respectively
detailed solution
Correct option is A
The dispersive power for crown glass ω=nv−nrny−1=1.5318−1.51401.5170−1=0.01780.5170=0.034and for flint glass ω'=1.6852−1.64341.6499−1=0.064Talk to our academic expert!
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ABC is an isosceles right angled triangle with the angle BAC 90o. A ray of light parallel to the base BC strikes the face AB. The refracted ray in the prism strikes the base BC. If the refractive index of the material of the prism is , find the total angle of deviation of the final emergent ray
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