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QJEEM19Ph02e8: JEE Main 2019 Physics - Class 12 JEEM19Ph02e8 Solution: In a meter bridge experiment, the circuit diagram and the…

In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure JEE Main 2019 (Online) 10th April Morning Slot Physics - Current Electricity Question 238 English
SI. No. R(Ω) l(cm)
1. 1000 60
2. 100 13
3. 10 1.5
4. 1 1.0
Which of the readings is inconsistent?

Multiple Choice Options

  • A 4
  • B 3
  • C 2
  • D 1

Step-by-Step Verified Solution

asx=R(100−l)l

for(A)x=1000×(100−60)40≈667

for(B)x=100×(100−13)13≈669

for(C)x=10×(100−1.5)98.5≈667

for(D)x=1×(100−1)1≈667

So reading in serial no. (4) is completely different hence correct answer (A).

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