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Q.

What will be the conductivity of pure silicon crystal at 300 K temperature if electron cotter pair at this temperature is  1⋅072×1010/cm3 and μn=1350cm2/V−s and μp=480cm2/V−s?

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a

3⋅14×10−4mho/cm

b

∣3⋅14×10−5mho/cm

c

3⋅14×10−6mho/cm

d

3×10−6mho/cm

answer is C.

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Detailed Solution

σi=eniμn+μp σi=1.6×10−191.072×1010(1350+480] =3⋅14×10−6mho/cm
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