Analog Electronics
Why holes are not created in a metal ?

 The conduction band and valance band are overlapped
 The forbidden band is missing
None of these
 Both 1 & 2

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Analog Electronics
For transistor action

  the emitter should be heavily doped.
  all of these.
  Je must be forward biased and Jc should be reverse biased.
  the base region must be very thin and lightly doped.

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