| 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. [JEE ONLINE 12-05-2012] |
A) Statement 1 is false. Statement 2 is true.
B) Statement 1 is true. Statement 2 is false.
C) Statement 1 is true. Statement 2 is true, Statement 2 is not a correct explanation of Statement 1.
D) Statement 1 is true. Statement 2 is true, Statement 2 is the correct explanation of Statement 1.
Correct Answer: D
Solution :
[d] Temperature coefficient of resistance is negative for pure semiconductor. And no. of charge carriers in conduction band increases with increase in temperature.
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