- AIs a lightly doped junction diode.
- BHeavily doped junction diode.
- CIs either p-type or n-type.
- DHas no p-n junction.
Explanation:
The reverse breakdown voltage depends on doping of the diode. Hence, in the Zener diode the heavy doping of its p-n junction is done. The depletion region formed in the diode is very thin (<1 m) and the reverse bias voltage of about 5 V which is less than ordinary diode.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Two parallel plates have equal and opposite charge. When the space between them is evacuated, the electric field between the plates is 2 . When the space is filled with dielectric, the electric field becomes 1
. The dielectric constant of the dielectric material
|
(a) 1/2 |
(b) 1 |
(c) 2 |
(d) 3 |
The capacity of a condenser is 4 farad and its potential is 100 valts. The energy released on discharging it fully will be
|
(a) 0.02 Joule |
(b) 0.04 Joule |
(c) 0.025 Joule |
(d) 0.05 Joule |
In the circuit as shown in the figure, the heat produced by 6 ohm resistance due to current flowing in it is 60 calorie per second. The heat generated across 3 ohm resistance per second will be

|
(a) 30 calorie |
(b) 60 calorie |
(c) 100 calorie |
(d) 120 calorie |
Assertion : Mass of moving photon varies inversely as the wavelength.
Reason : Energy of the particle = Mass × ![]()
|
(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. |