What is the power of combination of lenses?

Answer:

The power of combination of lenses would be the algebraic sum of the powers of the individual lenses.

1/F = 1/f1 + 1/f2

Where,

P1 = Power of lens of focal lens f1

P2 = Power of lens of focal lens f2

Let P be the power of combination of focal length F, then

P = P1 + P2

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