MCQ
Zener breakdown takes place if:
- ADoped impurity is low
- BDoped impurity is high
- CLess impurity in N-part
- DLess impurity in P-type
✓
Answer
- Doped impurity is high
Explanation:
Zener breakdown occurs due to heavily doped diodes.In this process electrons crosses the barrier from the valence band of the p-type to the conduction band of the lightly filled n-type material.
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→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→
Similar questions
Two equal masses are attached to the two ends of a spring of spring constant k. The masses are pulled out symmetrically to stretch the spring by a length x over its natural length. The work done by the spring on each mass is:
→-
$\frac{1}{2}\text{kx}^2$
-
$-\frac{1}{2}\text{kx}^2$
-
$\frac{1}{4}\text{kx}^2$
-
$-\frac{1}{4}\text{kx}^2$
A nuclear reaction with positive Q value is:
The lowest frequency of light that will cause the emission of photoelectrons from the surface of a metal (for which work function is 1.65 eV) will be
|
(a) 4 |
(b) 4 |
(c) 4 |
(d) 4 |
The Young's experiment is performed with the lights of blue (λ = 4360 Å) and green colour (λ = 5460 Å), If the distance of the 4th fringe from the centre is x, then
|
(a) x (Blue) = x (Green) |
(b) x (Blue) > x (Green) |
(c) x (Blue) < x (Green) |
(d) |
Which of the following parameters are the same for all hydrogen-like atoms and ions in their ground states?
Due to the flow of current in a circular loop of radius R, the magnetic induction produced at the centre of the loop is B. The magnetic moment of the loop is (
|
(a) |
(b) |
(c) |
(d) |
Assertion : If three capacitors of capacitance C1 < C2 < C3 are connected in parallel then their equivalent capacitance Cp > Cs
Reason : 
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
Heavy water is used as moderator in a nuclear reactor. The function of the moderator is
|
(a) To control the energy released in the reactor |
|
(b) To absorb neutrons and stop chain reaction |
|
(c) To cool the reactor faster |
|
(d) To slow down the neutrons to thermal energies |
Two short magnets of equal dipole moments M are fastened perpendicularly at their centre (figure). The magnitude of the magnetic field at a distance d from the centre on the bisector of the right angle is:
In a semiconductor, the forbidden energy gap between the valence band and the conduction band is of the order is: