If the refractive indices of crown glass for red, yellow and violet colours are ${\rm{1}}{\rm{.5140, 1}}{\rm{.5170}}\,{\rm{ and }}\,{\rm{1}}{\rm{.5318}}$ respectively and for flint glass these are ${\rm{1}}{\rm{.6434,}}\,\,{\rm{1}}{\rm{.6499}}\,{\rm{ and }}\,{\rm{1}}{\rm{.6852}}$ respectively, then the dispersive powers for crown and flint glass are respectively

${\rm{0}}{\rm{.034 }}\,{\rm{and}}\,{\rm{ 0}}{\rm{.064}}$

${\rm{0}}{\rm{.064 }}\,{\rm{and}}\,{\rm{ 0}}{\rm{.034}}$

${\rm{1}}{\rm{.00}}\,{\rm{ and}}\,{\rm{ 0}}{\rm{.064}}$

${\rm{0}}{\rm{.034 }}\,{\rm{and}}\,{\rm{ 1}}{\rm{.0}}$

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JEE PHYSICS MCQ: RAY OPTICS

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Application +4 | -1

If the refractive indices of crown glass for red, yellow and violet colours are

\mathrm{1}\mathrm{.5140, 1}\mathrm{.5170}\,\mathrm{ and }\,\mathrm{1}\mathrm{.5318}

respectively and for flint glass these are

\mathrm{1}\mathrm{.6434,}\,\,\mathrm{1}\mathrm{.6499}\,\mathrm{ and }\,\mathrm{1}\mathrm{.6852}

respectively, then the dispersive powers for crown and flint glass are respectively

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Correct option: A

\mathrm{0}\mathrm{.034 }\,\mathrm{and}\,\mathrm{ 0}\mathrm{.064}

Option A (0.034 and 0.064) is correct because it accurately calculates the dispersive powers for crown and flint glass using the given refractive indices.

JEE PHYSICS MCQ: RAY OPTICS

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