The power of a lens is + 2.0 D. Find its focal length and state the ki – InterviewSolution

1.

The power of a lens is + 2.0 D. Find its focal length and state the kind of the lens.

Answer»

P = +2.0D

P = 1/F(In metre)

⇒ F = 1/P = 1/2

F = 0.5 m or 50 cm

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