Physics, asked by karnamnike, 10 months ago

an eye specialist prescribes a number 4.5d to a person fir his glasses what is the nature of the lens ? what is the focal length of the lens?

Answers

Answered by cricketeryash1p9diw7

6

Explanation:

Mate your answer is

The nature of the lens prescribed is "converging" or "convex lens", as P=+ve.

As, P=1/f

=>f=1/P

=1/4.5

=10/45

=2/9

f=0.22m

OR f=22.22cm

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