Science, asked by kajalkumari65307, 7 months ago

Find the focal length of a lens of power 2.0 D?​

Answers

Answered by dastgirg655
1

Answer:

Focal length f= 1/p So according to the question power is +2.0 D f= 1/2.0 = 0.5 m In centimeter ...the focal length is 50cm. it means that it is biconvex lens having focal length 50 cm.

Explanation:

Answered by varnittyagi1705
1

Answer:

Power of lens (P) = -2.0 D

P = 1/f or f = 1/m

f = 1/-2.0 = -0.5 m

Negative sign of focal length means that the lens is concave lens.

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