1
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
Assertion (A) : The poles of a bar magnet cannot be separated.

Reason (R) : Magnetic monopoles do not exist.
A
Both (A) & (R) are true and (R) is correct explanation of (A).
B
Both (A) & (R) are true and (R) is not correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false and (R) is also false.
2
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
Assertion (A) : When radius of a current carrying loop is doubled, its magnetic moment becomes four times.

Reason (R) : The magnetic moment of a current carrying loop is directly proportional to the area of the loop.
A
Both (A) & (R) are true and (R) is correct explanation of (A).
B
Both (A) & (R) are true and (R) is not correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false and (R) is also false.
3
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
Assertion (A) : Higher the range, lower is the resistance of an ammeter.

Reason (R) : To increase the range of an ammeter additional shunt is added in series to it.
A
Both (A) & (R) are true and (R) is correct explanation of (A).
B
Both (A) & (R) are true and (R) is not correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false and (R) is also false.
4
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
Assertion (A) : A step-up transformer cannot be used as a step-down transformer.

Reason (R) : A transformer works only in one direction.
A
Both (A) & (R) are true and (R) is correct explanation of (A).
B
Both (A) & (R) are true and (R) is not correct explanation of (A).
C
(A) is true but (R) is false.
D
(A) is false and (R) is also false.
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