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JEE Main Physics Class 12 Electronic Devices Part 1 Questions

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Question : 70

Total: 99

This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements.
Statement 1: A pure semiconductor has negative temperature coefficient of resistance.
Statement 2: On raising the temperature, more charge carriers are released into the conduction band.

[Online May 12, 2012]

Statement 1 is false, Statement 2 is true.
Statement 1 is true, Statement 2 is false.
Statement 1 is true, Statement 2 is true, Statement 2 is not a correct explanation of Statement 1.
Statement 1 is true, Statement 2 is true, Statement 2 is the correct explanation of Statement 1.

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