Physics, asked by muskaan2128, 2 months ago

A convex lens of f = 25 cm & concave lens of f = 10 cm are combined. Determine net power​

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Answered by nainakakkar2020
1
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Answered by XxItzAnvayaXx
3

P1=\frac{1}{25}\\P1=0.04D

[∵ we always take F of concave lens as '-'ve negative]

P2=\frac{1}{-10}=\frac{-1}{10}\\P2=-0.1D

∴ net power =P1+P2

=0.04+(-0.1)\\=-0.06D

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