- 1(current)
Q. No.The conductivity of a semiconductor increases with an increase in temperature,
because:
because:
| 1. | number density of free current carries increases |
| 2. | relaxation time increases |
| 3. | both number density of carries and relaxation time increase |
| 4. | number density of current carriers increases, relaxation time decreases but the effect of decrease in relaxation time is much less than the increase in number density |
Subtopic: Â Energy Band theory |
 77%
Level 2: 60%+
Hints
In the depletion region of a diode:
Choose the correct option from the given ones:
| (a) | There are no mobile charges. |
| (b) | An equal number of holes and electrons exist, making the region neutral. |
| (c) | Recombination of holes and electrons has taken place. |
| (d) | Immobile charged ions exist. |
Choose the correct option from the given ones:
| 1. | (a), (c), (d) | 2. | (b), (d) |
| 3. | (a), (d) | 4. | (b), (c) |
Subtopic: Â Energy Band theory |
 76%
Level 2: 60%+
Please attempt this question first.
Hints
Please attempt this question first.
- 1(current)
Q. No.
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