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(C) When thin lenses are placed in contact,the total power of the combination is the algebraic sum of the individual powers.For four similar lenses ea

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$4 p$ and $m^4$

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(C) When thin lenses are placed in contact,the total power of the combination is the algebraic sum of the individual powers.For four similar lenses each of power $p$,the net power is $P_{	ext{net}} = p + p + p + p = 4p$.When lenses are placed in contact,the total magnification of the combination is the product of the individual magnifications.For four similar lenses each of magnification $m$,the net magnification is $m_{	ext{net}} = m 	imes m 	imes m 	imes m = m^4$.Therefore,the power is $4p$ and the magnification is $m^4$.

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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