Science, asked by gshailja739, 2 months ago

find power of lens having focal length -20 state type of lens​

Answers

Answered by anuj03071996
0

Answer:

Power of lens (P) = -2.0 D

P = 1/f or f = 1/m

f = 1/-2.0 = -0.5 m

Negative sign of focal length means that the lens is concave lens.

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