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NEET 2025 · Combination of Lenses

Combination of Lenses question from NEET 2025

Q11NEET 2025Easy

Combination of Lenses

In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination and the total magnification in comparison to the power ( $p$ ) and magnification ( $m$ ) for each lens will be, respectively

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Answer: (a)

Powers of lenses in contact add: $P = p + p + p + p = 4p$ .
Treating the image of each lens as the object for the next, the total magnification is the product of the individual ones: $m \times m \times m \times m = m^4$ .
So the answer is (a) $4p$ and $m^4$ .

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