Physics, asked by yuvi2004, 11 months ago

what is meant by nature of the lens

Answers

Answered by art12345

1

Answer:

The minus sign tells us that the lens is concave (diverging). A dioptre is 1/metre, so 4 dioptre is 1/4m (25cm) focal length.

The plus sign tells that the lens is convex ( converging )

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