Question

doctor advised to use a 2D lens then what is the focal length of that lens​

Answer 1

Answer:

Given Focal Length is 2 D.

We know that ...

P = 1/f(in m)

2 = 1/f

f = 1/2

F = 0.5 m.

= 50 cm.

Hence, it will be a convex lens of focal length 50 cm .

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