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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R λ 2 = λ 1 X , X = 
To keep same null point, means λ 1 and λ 2 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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