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It was found that the refractive index of material of a certain prism varied as `1.5 + 0.004//lambda^(2)`, where `lambda` is the wavelength of light used to measure the refractive index. The same material was then used to construct a thin prism of apex angle `10^(@)`. Angles of minimum deviation `(delta m)` of the prism were recorded for the sources with wavelengths `lambda_(1)` and `lambda_(2)` respectively. ThenA. `delta_(m)(lambda_(1))ltdelta_(m)(lambda_(2))" if "lambda_(1)ltlambda_(2)`.B. `delta_(m)(lambda_(1))gtdelta_(m)(lambda_(2))" if "lambda_(1)gtlambda_(2)`.C. `delta_(m)(lambda_(1))gtdelta_(m)(lambda_(2))" if "lambda_(1)ltlambda_(2)`.D. `deltam` is the same in both the cases. |
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Answer» Correct Answer - C |
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