Two lenses are placed in contact with each other and the focal length of the combination is 80 cm. If the focal length of one is 20 cm, then the power of the other will be?
Answers
Answered by
1
P^2 = P - P^1
= 100/80 - 100/20
= 100-400/80
= -300/80
= -3.75
so the answer is -3.75D
Answered by
8
Answer:
your answers is -3.75
Explanation:
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