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Q.

Mobility of free electrons in a conductor is

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a

inversely proportional to electron density

b

directly proportional to electron density

c

directly proportional to relaxation time

d

inversely proportional to relaxation density

answer is B.

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Detailed Solution

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Mobility of free electrons, μ= $\frac{q τ}{m}$ ,

Hence, mobility of free electrons in a conductor is directly proportional to relaxation time.

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