KCET 2005 Physics Solved Paper

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Question : 60 of 60

Marks: +1, -0

Identify the property which is not characteristic for a semi-conductor ..............

at a very low temperatures it behaves like an insulator.
at higher temperatures two types of charge carriers will cause conductivity.
The charge carriers are electrons and holes in the valance band at higher temperatures.
the semiconductor is electrically neutral.

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