Physics, asked by sunilkumarr1966, 9 months ago

if the focal are 25 cm , - 40 cm and 75 cm . find power of combination

Answers

Answered by kasha2611

0

Answer:

16/3 D

Explanation:

p=p1+p2+p3

p1=100/25=4D

p2=-100/40=-5/2D

p3=100/75=4/3D

p=4-5/2+4/3

p=16/3D

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