What is the power of concave lens of focal length 40 cm
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Explanation:
Power (P) = 1/f = 1/40 = 100/40 = 2.5 D(डाइ ओप्टर)
Answered by
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Answer:
p=1/f
p=1/40/100
p=100/40
p=2.5dioptres
Explanation:
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