Question

(iii) The power of a convex lens of focal length 25 cm is
(A) + 4.0 D
(B) 0.25 D
(C) – 4.0 D
(D) – 0.4​

Answer 1

Answer:

(A) + 4.0 D

Explanation:

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Answer 2

Explanation:

As it is a convex lens so its power is positive. Thus, the power of the lens is +4D.