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MHT CET 2024 (2 May, Shift 1) · Wheatstone Bridge & Metre Bridge

Wheatstone Bridge & Metre Bridge question from MHT CET 2024 (2 May, Shift 1)

Q28MHT CET 2024 · 2 MAY · SHIFT 1Easy

Wheatstone Bridge & Metre Bridge

The resistances in the left and right gap of a metre bridge are 40 Ω40\ \Omega and 60 Ω60\ \Omega respectively. When the bridge is balanced, the distance of the null point from the centre of the wire towards left is

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Answer: (b)

  1. 4060=l100−l⇒3l=200−2l\frac{40}{60} = \frac{l}{100 - l} \Rightarrow 3l = 200 - 2l
  2. l=40 cml = 40\text{ cm} from the left end
  3. Distance from centre =50−40=10 cm= 50 - 40 = 10\text{ cm} towards left
  4. So the answer is (b) 10 cm.
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