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A strip of copper and another of germani...

A strip of copper and another of germanium are cooled from room temperature to 80 K. The resistance of

A

copper strip increases and that of germanium decreases

B

copper strip decreases and that of germanium increases

C

each of these increases

D

each of these decreases

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The correct Answer is:
B
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MOTION-SEMI CONDUCTOR AND LOGIC GATES-EXERCISE 3
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  7. When p-n junction diode is forward biased then

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  10. In a common-base amplifier, the phase difference between the input sig...

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  15. In the following, which one of the diodes is reverse biased ?

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  18. Carbon , silicon and germanium have four valence electrons each . At r...

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