Question
A p-type semiconductor is:
✓
Answer
- Uncharged.
A p-type semiconductor is formed by doping a pure semiconductor with a p-type material. As impurity atoms take the position of the germanium atom in a germanium crystal, three electrons of a p-type material form covalent bonds by sharing electrons with three neighbouring germanium atoms. However, the fourth covalent bond is left incomplete, with a want of one electron. This creates a hole. As the atom as a whole is neutral, the p-type material is also neutral.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
More "M.C.Q (1 Marks)" from Semiconductor Electronic: Material, Devices And Simple Circuits→Semiconductor Electronic: Material, Devices And Simple Circuits — all question types→Physics STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→
Similar questions
The reactance of a circuit is zero. It is possible that the circuit contains:
An $\alpha$-particle is bombarded on $^{14}N.$ As a result, $a ^{17}O$ nucleus is formed and a particle is emitted. This particle is a:
→A block of mass M is hanging over a smooth and light pulley through a light string. T he other end of the string is pulled by a constant force F. The kinetic energy of the block increases by 20J in 1s.
- The tension in the string is Mg.
- The tension in the string is F.
- The work one by the tension on the block is 20J in the above 1s.
- The work done by the force of gravity is -20J in the above 1s.
Radioactivity is(a) Irreversible process(b) Self disintegration process(c) Spontaneous process(d) All of the above
The frequency and intensity of a light source are both doubled. Consider the following statements.
- The saturation photocurrent remains almost the same.
- The maximum kinetic energy of the photoelectrons is doubled.
A person cannot see objects clearly beyond 2.0 m. The power of lens required to correct his vision will be(a) + 2.0 D(b) – 1.0 D(c) + 1.0 D(d) – 0.5 D
Assertion : When $PN-$junction is forward biased then motion of charge carriers at junction is due to diffusion. In reverse biasing. The cause of motion of charge is drifting.
Reason : In the following circuit emitter is reverse biased and collector is forward biased.
→Reason : In the following circuit emitter is reverse biased and collector is forward biased.
In a series $\text{RLC}$ circuit that is operating above the resonant frequency, the current.
→The magnitude of gravitational potential energy of the moon-earth system is U with zero potential energy at infinite separation. The kinetic energy of the moon with respect to the earth is K.
- U < K
- U > K
- U = K
Which relation is correct for the power of compound microscope ?