1
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
The core of a transformer is laminated to reduce the effect of
A
flux leakage
B
copper loss
C
hysteresis loss
D
eddy current
2
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
Assertion (A) : A negative charge in an electric field moves along the direction of the electric field.

Reason (R) : On a negative charge a force acts in the direction of the electric field.
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) : 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.
4
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.
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