Question

find the power of concave lens of focal length 1.5m​

Answer 1

Answer:

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☞Thus, the power of this concave lens is, -0.5 dioptre.

Answer 2

According to lens formula;

P(power)=1/F(focal length)

P = 1/1.5 =1×10/15=2/3 = 0.666~

= 0.6 Dioptre

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