In metre bridge experiment, the resistance in the left gap is 15 Ω and in the right gap is 45 Ω. The bridge is balanced. The distance of the null point from the centre of the wire is (a) 80 cm (b) 60 cm (c) 40 cm (d) 25 cm

Answer: (d). 15/45 = (l)/(100 - l) ⇒ 3l = 100 - l l = 25 cm from the left end Distance from centre = 50 - 25 = 25 cm So the answer is (d) 25 cm.

In metre bridge experiment, the resistance in the left gap is 15 Ω… | MHT CET 2026 (15 Apr, Shift 2)

Q2MHT CET 2026 · 15 APR · SHIFT 2Easy

Wheatstone Bridge & Metre Bridge

In metre bridge experiment, the resistance in the left gap is 15 $\Omega$ and in the right gap is 45 $\Omega$ . The bridge is balanced. The distance of the null point from the centre of the wire is

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Answer: (d)

$\frac{15}{45} = \frac{l}{100 - l} \Rightarrow 3l = 100 - l$
$l = 25\text{ cm}$ from the left end
Distance from centre $= 50 - 25 = 25\text{ cm}$
So the answer is (d) 25 cm.

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