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What will be conductivity of pure silicon crystal at 300K temperature. If electron hole pairs percm3is 1.072 x1010 at this temperature,mobility of electron μe = 1350 cm2/ volt·s and mobility of hole μh= 480 cm2/volt-s :-

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a

3.14 x 10-6 mho/cm

b

3 x106 mho/cm

c

10-6 mho/cm

d

106 mho/cm

answer is A.

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Detailed Solution

for an intrinsic semiconductor conductivity σ= nμe+μhe where n is number of hole electron pair per unit volume σ=1.072×1010×1350 + 480×1.6×10-19=3.14×10-6

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