Question

A doctor has prescribed a corrective lens of power + 1.5 d find the focal length of the lens is is this prescribed lens diverging or converging

Answer 1

Explanation:

power of lens = 1

f

•°•1.5=1

f

f=1

1.5

f=0.666 m

Answer 2

1.5 = 1/ғ

1.5ғ = 1

ғ = 1/1.5

ғ = 0.67ᴍ

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