Statement-I: 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.
Statement-II: Resistance of a metal increases with increase in temperature.
Text Solution
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To keep same null point, means 
and 
are same. As temperature increases value of unknown resistance increases. To get same null point, R must be increased. So, statement I is wrong. Statement-II is true.
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