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Experimental Physics

JEE Main level, single correct, medium

49 of 70

Question 49 of 70

In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure.
S. No. $R\left(\Omega \right)$ $l\left(cm\right)$
1.
2.
3.
4.
$1000$
$100$
$10$
$1$
$60$
$13$
$1.5$
$1.0$
Which of the reading is inconsistent?

Show answer and solution

Answer: (D) $4$

For meter bridge:

\dfrac{R}{l}=\dfrac{X}{100-l}

1\rightarrow \dfrac{1000}{60}=\dfrac{X}{40}\Rightarrow X=\dfrac{2000}{3}=666.67 \Omega

2\rightarrow \dfrac{100}{13}=\dfrac{X}{27}\Rightarrow X=669.23 \Omega

3\rightarrow \dfrac{10}{1.5}=\dfrac{X}{98.5}\Rightarrow X=656.67 \Omega

4\rightarrow \dfrac{1}{1}=\dfrac{X}{99}\Rightarrow X=99 \Omega

Resistance calculated by using data from 4th observation is most inconsistent.

JEE Main question paper PDF

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JEE Main Physics practice question on Experimental Physics (Experimental Physics), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.

In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure. S. No. R(Ω)R\left(\Omega \right)R(Ω) l(cm)l\left(cm\right)l(cm) 1. 2. 3. 4. 100010001000 100100100 101010 111 606060 131313 1.51.51.5 1.01.01.0 Which of the reading is inconsistent?

JEE Main question paper PDF

More Physics practice

In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure.
S. No. $R\left(\Omega \right)$ $l\left(cm\right)$
1.
2.
3.
4.
$1000$
$100$
$10$
$1$
$60$
$13$
$1.5$
$1.0$
Which of the reading is inconsistent?