Three prisms ${\rm{1, 2 }}\,{\rm{and\,3}}$ have the prism angle $A = {60^0}$, but their refractive indices are respectively ${\rm{1}}{\rm{.}}\,{\rm{4, 1}}{\rm{.}}\,{\rm{5 }}\,{\rm{and}}\,{\rm{ 1}}{\rm{.}}\,{\rm{6}}$. If ${\delta _1},\,\,{\delta _2},\,\,{\delta _3}$ be their respective angles of deviation then

${\delta _2} > {\delta _1} > {\delta _3}$

JEE PHYSICS MCQ: RAY OPTICS

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Application +4 | -1

Three prisms

\mathrm{1, 2 }\,\mathrm{and\,3}

have the prism angle

A = {60^0}

, but their refractive indices are respectively

\mathrm{1}\mathrm{.}\,\mathrm{4, 1}\mathrm{.}\,\mathrm{5 }\,\mathrm{and}\,\mathrm{ 1}\mathrm{.}\,\mathrm{6}

. If

{\delta _1},\,\,{\delta _2},\,\,{\delta _3}

be their respective angles of deviation then

View answer and explanation

Correct option: A

{\delta _3} > {\delta _2} > {\delta _1}

Option B (5) is correct because the number of images formed by two plane mirrors inclined at an angle θ is given by the formula n = 360/θ - 1 if 360/θ is an even integer, and n = 360/θ if 360/θ is an odd integer.

JEE PHYSICS MCQ: RAY OPTICS

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