Question

A doctor prescribes a corrective lens of power ‒0.5D to a person. The focal length of lens and the type is



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Answer 1

Answer

Power of lens p=+1.5D

p= 1/f

1.5= f/1

f= 1.5/1 m

f= 15/10 m

f= 3/2

m=0.67m

Focal length of the lens is +0.67m.

The prescribed lens is converging in nature

Explanation:

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