- AThe diode is in its forward conducting state.
- BThe diode is in its reverse non-conducting state.
- CThere is no potential difference between the anode and cathode.
- DNone of these
Explanation:
In a semiconductor diode, when diode in its forward conducting state current starts in diode and depletion region starts to deformed. After sometime depletion region is removed.
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The radius of a nucleus of a mass number A is directly proportional to
|
(a) |
(b) A |
(c) |
(d) |
The electric field inside a spherical shell of uniform surface charge density is
|
(a) Zero |
|
(b) Constant, less than zero |
|
(c) Directly proportional to the distance from the centre |
|
(d) None of the above |
In an X-rays tube, the intensity of the emitted X-rays beam is increased by
| (a) Increasing the filament current | (b) Decreasing the filament current |
|
(c) Increasing the target potential |
(d) Decreasing the target potential |
A solenoid is 1.0 metre long and it has 4250 turns. If a current of 5.0 ampere is flowing through it, what is the magnetic field at its centre [![]()
|
(a) 5.4 |
(b) 2.7 |
|
(c) 1.35 |
(d) 0.675 |
Four modifications are suggested in the lens formula to include the effect of the thickness t of the lens. Which one is likely to be correct?