1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Consider the following statements (A) and (B) and identify the correct answer.

(A) A Zener diode is connected in reverse bias, when used as a voltage regulator.

(B) The potential barrier of p-n junction lies between 0.1 V to 0.3 V.
A
(A) is incorrect but (B) is correct.
B
(A) and (B) both are correct.
C
(A) and (B) both are incorrect.
D
(A) is correct and (B) is incorrect.
2
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A spring is stretched by 5 cm by a force 10 N. The time period of the oscillations when a mass of 2 kg is suspended by it is -
A
0.628 s
B
0.0628 s
C
6.28 s
D
3.14 s
3
NEET 2021
MCQ (Single Correct Answer)
+4
-1
The electron concentration in an n-type semiconductor is the same as hole concentration in a p-type semiconductor. An external field (electric) is applied across each of them. Compare the currents in them.
A
No current will flow in p-type, current will only flow in n-type
B
Current in n-type = current in p-type
C
current in p-type > current in n-type
D
current in n-type > current in p-type
4
NEET 2021
MCQ (Single Correct Answer)
+4
-1
A dipole is placed in an electric field as shown. In which direction will it move?

NEET 2021 Physics - Electrostatics Question 12 English
A
towards the right as its potential energy will increase.
B
towards the left as its potential energy will increase.
C
towards the right as its potential energy will decrease.
D
towards the left as its potential energy will decrease.
EXAM MAP
Joint Entrance Examination
JEE MainJEE AdvancedWB JEEBITSATMHT CET
Medical
NEET
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN