JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

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{f_v}

and

{f_r}

are the focal lengths of a convex lens for violet and red light respectively and

{F_v}

and

{F_r}

are the focal lengths of a concave lens for violet and red light respectively, then

View answer and explanation

Correct option: B

{f_v} < \,\,{f_R}

and

{F_v} < {F_r}

Option B is correct because the refractive index is higher for violet light than for red light, leading to a shorter focal length for violet light in both convex and concave lenses.

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