What is the relative decrease in focal length of a lens for an in… | JEE Main 2025 Physics PYQ

MCQEasyJEE Main 2025 · 24 January, Shift 1Refraction & Lenses

What is the relative decrease in focal length of a lens for an increase in optical power by $0.1 \, \text{D}$ from $2.5 \, \text{D}$ ? (' $\text{D}$ ' stands for dioptre).

A
$0.04$
B
$0.40$
C
$0.1$
D
$0.01$

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