Question
The majority charge carriers in P-type semiconductor are
|
(a) Electrons |
(b) Protons |
(c) Holes |
(d) Neutrons |
✓
Answer
(c) Holes
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
Similar questions
Let nr and nb be the number of photons emitted by a red bulb and a blue bulb, respectively, of equal power in a given time:
The separation between the plates of a charged parallel-plate capacitor is increased. Which of the following quantities will change?
- Charge on the capacitor.
- Potential difference across the capacitor.
- Energy of the capacitor.
- Energy density between the plates.
A coil having 500 square loops each of side 10 cm is placed normal to a magnetic flux which increases at the rate of 1.0 tesla/second. The induced e.m.f. in volts is
|
(a) 0.1 |
(b) 0.5 |
(c) 1 |
(d) 5 |
A circular loop carrying a current is replaced by an equivalent magnetic dipole. A point on the loop is in:
A man runs towards mirror at a speed of 15 m/s. What is the speed of his image
|
(a) 7.5 m/s |
(b) 15 m/s |
(c) 30 m/s |
(d) 45 m/s |
Fission of nuclei is possible because the binding energy per nucleon in them
|
(a) Increases with mass number at high mass numbers |
|
(b) Decreases with mass number at high mass numbers |
| (c) Increases with mass number at low mass numbers |
| (d) Decreases with mass number at low mass numbers |
A big drop is formed by mixing 64 small drops. If each small drop has charge Q, then the charge on the big drop will be
An astronomical refractive telescope has an objective of focal length 20m and an eyepiece of focal length 2cm.
Potential at a point x-distance from the centre inside the conducting sphere of radius R and charged with charge Q is
|
(a) |
(b) |
(c) |
(d) xQ |
In a wave, the path difference corresponding to a phase difference of f is
|
(a) |
(b) |
(c) |
(d) |
