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Power and Thin Lenses in Contact

If the power ...

Question

If the power of two lenses and $P_{1}$ and $P_{2}$ ; when they are combined; the effective power is:

A

P_{1} - P_{2}

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B

P_{1} + P_{2}

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C

P_{1} \times P_{2}

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D

\frac{P_{1}}{P_{2}}

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Solution

The correct option is B $P_{1} + P_{2}$
The effective power is $P_{1} + P_{2}$

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