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Standard XII
Physics
P-N Junction
Question

A p-n junction diode cannot be used
  1. for converting light energy to electric energy.
  2. as a rectifier.
  3. for getting light radiation.
  4. for increasing the amplitude of an AC signal.

A
as a rectifier.
B
for getting light radiation.
C
for increasing the amplitude of an AC signal.
D
for converting light energy to electric energy.
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Solution
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To increase the amplitude of an AC signal, transistors are used. p-n junction diodes can be used as rectifiers and in photo-diode and LED.

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