List of top Physics Questions on Semiconductor electronics: materials, devices and simple circuits asked in NEET (UG)

The output of OR gate is 1

$A n-p-n$ transistor conducts when

Barrier potential of a p-n junction diode does not depend on:

If a full wave rectifier circuit is operating from 50 Hz mains, the fundamental frequency in the ripple will be:

A n-p-n transistor conducts when

Reverse bias applied to a junction diode

Following diagram performs the logic function of:

For the given circuit of p-n junction diode which is correct :-

For a common emitter circuit if \(\frac{IC}{IE}=0.98\) then current gain for common emitter circuit will be

From the following diode circuit. Which diode in forward biased condition:

Given truth table is correct for:

A	B	Y
1	1	1
1	0	0
0	1	0
0	0	0

A p-n junction diode can be used as

Depletion layer consists of

A semiconducting device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops to almost zero. The device may be

To obtain a $p$-type germanium semiconductor, it must be doped with

When npn transistor is used as an amplifier, then

Diamond is very hard because

A piece of copper and other of germanium are cooled from the room temperature to 80 K, then

p-n junction is said to be forward biased, when

At absolute zero, Si acts as