Q126 / 270 · NDA 2012 (Phase 1) · General Ability

If the focal length of the biconvex lens is 25 cm , then the power of the lens will be

Correct answer
A
+4 dioptre
B
-4 dioptre
C
+0.04 dioptre
D
-0.04 dioptre

Solution

The correct answer is option A.

Hence, the correct answer is option: 'A'.

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