Question

# If temperature is decreased, then relaxation time of electrons in metals will

A
increase
B
decrrease
C
fluctuate
D
remains constant

Solution

## The correct option is A increaseWith decrease in temperature, resistance of metal conductor decreases. But  $$R \propto \dfrac{1}{\tau}$$, therefore time of relation $$\tau$$ increases. that's why the correct answer is option A.Physics

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