A metre bridge experiment, the resistance in the left gap is 20 Ω and in the right gap is 60 Ω. The bridge is balanced. The distance of the null point from the centre of the wire is (a) 50 cm (b) 75 cm (c) 25 cm (d) 40 cm

Answer: (c). 20/60 = (l)/(100 - l) 3l = 100 - l ⇒ l = 25 cm from the left end Distance from centre = 50 - 25 = 25 cm So the answer is (c) 25 cm.

A metre bridge experiment, the resistance in the left gap is 20 Ω and… | MHT CET 2026 (16 Apr, Shift 1)

Q1MHT CET 2026 · 16 APR · SHIFT 1Easy

Wheatstone Bridge & Metre Bridge

A metre bridge experiment, the resistance in the left gap is $20\ \Omega$ and in the right gap is $60\ \Omega$ . The bridge is balanced. The distance of the null point from the centre of the wire is

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Answer: (c)

$\frac{20}{60} = \frac{l}{100 - l}$
$3l = 100 - l \Rightarrow l = 25\text{ cm}$ from the left end
Distance from centre $= 50 - 25 = 25\text{ cm}$
So the answer is (c) 25 cm.

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