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Statement-1 : In a Meter Bridge experime...

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.
Statement-2 : Resistance of metal increases with increase in temperature.

A

Statement-I is True, Statement-II is True and Statement-II is a correct explanation for Statement-I

B

Statement-I is True, Statement-II is True and Statement-II is NOT a correct explanation for Statement-I

C

Statement-I is True, Statement-II is False

D

Statement-I is False, Statement-II is True

Text Solution

Verified by Experts

With increase in temperature, the value of unknown resistance will increase. In balanced Wheat stone bridge condition `R/X=l_1/l_2`
Where, R = value of standard resistance, X = value of unknown resistance.
To take null point at same point or `J_1/J_2` to remain unchanged,`R/x` should also remain unchanged.Therefore, if X is increasing R, should also increase.
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