MCQ Questions for Class 12 Physics Chapter 5 Magnetism and Matter Part-1 with Answers

Magnetism and Matter Part-1 Class 12 Physics MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 12 Physics Chapter 5 Magnetism and Matter Part-1 with Answers Pdf free download. MCQ Questions for Class 12 Physics with Answers were prepared based on the latest exam pattern. We have Provided Magnetism and Matter Part-1 Class 12 Physics MCQs Questions with Answers to help students understand the concept very well.

Class 12 Physics Chapter 5 Quiz

Class 12 Physics Chapter 5 MCQ Online Test

You can refer to NCERT Solutions for Class 12 Physics Chapter 5 Magnetism and Matter Part-1 to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Magnetism and Matter Part-1 Class 12 Physics MCQ online test

Q1.	S.I. unit of flux is :
	A.Ohm
	B.Weber
	C.Tesla
	D.None

Ans: Weber

Q2.	What is the angle of dip at a place where the horizontal component of earth’s magnetic field is equal to the vertical component?
	A.0°
	B.30°
	C.45°
	D.90°

Ans: 45°

Q3.	Which of the following has a low value in ferrites?
	A.Conductivity
	B.Permeability
	C.Magnetic susceptibility
	D.All the above

Ans: Conductivity

Q4.	The dimensional representation of magnetic flux density is :
	A.[MLT^-2]
	B.[MLT^-2A^-1]
	C.[MLT^-2A^-2]
	D.[MT^-2A^-1]

Ans: [MT^-2A^-1]

Q5.	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

Ans: two uniform and mutually perpendicular magnetic fields exist

Q6.	Ferrites may be:
	A.ant. ferromagnetic
	B.ferromagnetic
	C.ferrimagnetic
	D.None of the above

Ans: ferromagnetic

Q7.	A magnetic bar of M magnetic moment is placed m the field of magnetic strength B, the torque acting on it is :
	A.\(\vec{M} \).\(\vec{B} \)
	B.–\(\vec{M} \).\(\vec{B} \)
	C.\(\vec{M} \) × \(\vec{B} \).
	D.\(\vec{B} \) × \(\vec{M} \)

Ans: \(\vec{M} \) × \(\vec{B} \).

Q8.	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.

Ans: are from S-pole to N-pole of the magnet.

Q9.	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

Ans: S to N

Q10.	What is the magnetic field in the empty space enclosed by the toroidal solenoid of radius ‘R’? ,
	A.Infinity
	B.\(\frac{µ_0}{4π}\).\(\frac{2πl}{R}\)
	C.\(\frac{µ_0}{4π}\).(\(\frac{πl}{R}\))
	D.zero

Ans: zero

Q11.	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

Ans: N to S

Q12.	The dimensional representation of \(\sqrt{l/MB}\) is similar to that of:
	A.frequency
	B.time
	C.distance
	D.speed

Ans: time

Q13.	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

Ans: half

Q14.	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.\(\frac{B}{2}\)
	D.\(\frac{B}{4}\)

Ans: \(\frac{B}{2}\)

Q15.	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

Ans: equal to that of earth

Q16.	In a moving coil galvanometer, we use a radial magnetic field so that the galvanometer scale is :
	A.exponential
	B.linear
	C.algebraic
	D.logarithmic

Ans: linear

Q17.	The force between two parallel wire 2 × 10^-7 Nm^-1, placed 1 m apart to each other in vacuum. The electric current flowing through the wires is:
	A.1 A
	B.zero
	C.5 × 10⁶ A
	D.2 × 10^-7 A

Ans: 1 A

Q18.	The force acting per unit length of a semi circular wire of radius R carrying a current I is:
	A.\(\frac{µ_0l^2}{4R}\)
	B.\(\frac{µ_0l^2}{2R}\)
	C.\(\frac{µ_0l^2}{R}\)
	D.\(\frac{2µ_0l^2}{R}\)

Ans: \(\frac{µ_0l^2}{4R}\)

Q19.	Which of the following has higher magnetic susceptibility?
	A.diamagnetic
	B.paramagnetic
	C.ferromagnetic
	D.None of these

Ans: ferromagnetic

Q20.	The magnetic field of earth is due to:
	A.induction effect of the sun
	B.the presence of a large magnet at the centre of the earth
	C.interaction of cosmic rays with the current of earth
	D.motion and distribution of some material in an outside the earth