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Q.

If an intrinsic semiconductor is heated, the ratio of free electrons to holes is

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a

less than one

b

greater than one

c

decreases and becomes zero

d

equal to one

answer is C.

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Detailed Solution

If an intrinsic semiconductor is heated, the ratio of no. of electrons to holes will remain same, only the band gap decreases. For each free electron generated, a hole will be created in an intrinsic semiconductor.

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