CBSE Class 12 Magnetism and Matter Multiple Choice Questions with Answers. MCQ Questions Class 12 Magnetism and Matter with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 12 Magnetism and Matter MCQs with Answers to know their preparation level.
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MCQ Questions Class 12 Magnetism and Matter with Answers - Set - 3
Question 1:
The neutral point in the magnetic field of a horizontally placed bar magnet is a point where the magnetic field due to that bar magnet is:
(a) zero
(b) more than that of earth
(c) less than that of earth
(d) equal to that of earth
Correct Answer – (D)
Question 2 :
On quadrupling the moment of inertia of a magnet, its frequency of oscillation will become:
(a) half
(b) double
(c) four times
(d) one-fourth
Correct Answer – (A)
Question 3 :
A current carrying power line carries current from west to east. What will be direction of magnetic field 1 meter above it?
(a) N to S
(b) S to N
(c) E to W
(d) W to E
Correct Answer – (A)
Question 4 :
The magnetic lines of force inside a bar magnet:
(a) do not exist
(b) depends on area of cross-section of bar magnet
(c) are from N-pole to S-pole of the magnet
(d) are from S-pole to N-pole of the magnet.
Correct Answer – (D)
Question 5 :
Tangent law is applicable only when:
(a) two uniform and mutually perpendicular magnetic fields exist
(b) two magnetic fields exist
(c) horizontal component of earth’s magnetic field is present
(d) uniform magnetic field are used
Correct Answer – (A)
MCQ Questions Class 12 Magnetism and Matter with Answers
Question 6 :
The magnetic field strength due to a short bar magnet directed along its axial line at a distance r is B. What is its value at the same distance along the equatorial line?
(a) B
(b) 2B
(c) B/2
(d) B/4
Correct Answer – (C)
Question 7 :
The dimensional representation of √(l/MB) is similar to that of:
(a) frequency
(b) time
(c) distance
(d) speed
Correct Answer – (B)
Question 8 :
A magnetic dipole moment is a vector quantity directed from:
(a) S to N
(b) N to S
(c) E to W
(d) W to E
Correct Answer – (A)
Question 9 :
Ferrites may be:
(a) ant. ferromagnetic
(b) ferromagnetic
(c) ferrimagnetic
(d) None of the above
Correct Answer – (B)
Question 10 :
The dimensional representation of magnetic flux density is :
(a) [MLT-2]
(b) [MLT-2A-1]
(c) [MLT-2A-2]
(d) [MT-2A-1]
Correct Answer – (D)
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