MCQ
$STATEMENT-1$ In a Meter Bridge experiment, null point for an unknown resistance is measured. Now, the unknown resistance is put inside an enclosure maintained at a higher temperature. The null point can be obtained at the same point as before by decreasing the value of the standard resistance. and

$STATEMENT-2$ Resistance of a metal increases with increase in temperature.

  • A
    $STATEMENT-1$ is True, $STATEMENT-2$ is True; $STATEMENT-2$ is a correct explanation for $STATEMENT-1$
  • B
    $STATEMENT-1$ is True, $STATEMENT-2$ is True; $STATEMENT-2$ is $NOT$ a correct explanation for $STATEMENT-1$
  • C
    $STATEMENT - 1$ is True, $STATEMENT-2$ is False
  • $STATEMENT -1$ is False, $STATEMENT-2$ is True

Answer

Correct option: D.
$STATEMENT -1$ is False, $STATEMENT-2$ is True
d
$\mathrm{R}_{\text {mlnown }}=\frac{\mathrm{R}(100-\ell)}{\ell}$

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