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JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

Application +4 | -1

Two thin lenses when in contact, produce a combination of power

+ \,10\,\,D

. When they are

0.25\,\,m

apart, the power reduces to

+ \,6\,\,D

. The focal lengths of the lenses (in

m

) are

View answer and explanation

Correct option: A

\mathrm{0}\mathrm{.125}\,\mathrm{ and }\,\mathrm{0}\mathrm{.5}

Option A (0.125 and 0.5) is correct because it satisfies the power equations for lenses in contact and separated by a distance.

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