1
NEET 2021
MCQ (Single Correct Answer)
+4
-1
Change Language
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
Change Language
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
Change Language
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
Change Language
A dipole is placed in an electric field as shown. In which direction will it move?

NEET 2021 Physics - Electrostatics Question 17 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.
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