In a meter bridge experiment, the circuit diagram and the corresponding observation table are shown in figure
| $Sl$. $No$. | $R\, (\Omega )$ | $l\, (cm)$ |
| $1$. | $1000$ | $60$ |
| $2$. | $100$ | $13$ |
| $3$. | $10$ | $1.5$ |
| $4$. | $1$ | $1.0$ |
Which of the readings is inconsistent ?
JEE MAIN 2019, Medium
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