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 increase with increase in temperature.

Step-by-step solution

With increase in temperature, the value of unknown resistance will increase. In balanced Wheatstone bridge condition, R X = l₁ l₂ Here, R= value of standard resistance, X= value of unknown resistance . To take null point at same point or l₁ l₂ to remain unchanged, R X should also remain unchanged. Therefore, if X is increasing R should also increase. correct option is (d).