5. MAGNETISM AND MATTER( Objective Question Answer 2022 )

1. Which of the following has a low value in ferrites ?
(A) Conductivity
(B) Permeability
(C) Magnetic susceptibility
(D) All the above
Answer тЗТ A |
2. The dimensional representation of magnetic flux density is ;
(A) [MLT-2]
(B) [MLT-2A-1]
(C) [MLT-2A-2]
(D) [MT-2A-1]
Answer тЗТ D |
3. 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
Answer тЗТ A |
4. Ferrites may be :
(A) ant ferromagnetic
(B) ferromagnetic
(C) ferrimagnetic
(D) None of the above
Answer тЗТ B |
5. 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
Answer тЗТ A |
6. The force acting per unit length of a semi circular wire of radius R carrying a current I is :
Answer тЗТ A |
7. Which of the following has higher magnetic susceptibility ?
(A) diamagnetic
(B) paramagnetic
(C) ferromagnetic
(D) None of these
Answer тЗТ C |
8. 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
Answer тЗТ D |
9. Direction of magnetic field can determined by :
(A) declination only
(B) inclination only
(C) inclination and horizontal component of field
(D) declination and horizontal component of field
Answer тЗТ B |
10. The dimensions of magnetic permeability are :
(A) [MLT-2A-2]
(B) [ML2T2A-2]
(C) [ML2T-2A-1]
(D) [M-1LT-2A-2]
Answer тЗТ A |
11. A magnetic field exerts no force on a/an :
(A) magnetic
(B) unmagnetised iron bar
(C) moving charge
(D) charge at rest
Answer тЗТ D |
12. Susceptibility is +ve and large for substances.
(A) ferromagnetic
(B) paramagnetic
(C) diamagnetic
(D) non-magnetic
Answer тЗТ A |
13. SI unit of magnetic pole strength is :
(A) Ampere-metre
(B) Ampere-metre2
(C) Ampere2-metre
(D) Tesla-metre
Answer тЗТ B |
Class 12th physics objective question in English
S.N | Physics Objective English Medium |
1. | ┬аELECTRIC CHARGES AND FIELDS |
2. | LECTROSTATIC POTENTIAL AND CAPACITANCE |
3. | CURRENT ELECTRICITY |
4. | MOVING CHARGES AND MAGNETISM |
5. | MAGNETISM AND MATTER |
6. | ELECTROMAGNETIC INDUCTION |
7. | ALTERNATING CURRENT |
8. | ELECTROMAGNETIC WAVES |
9. | RAY OPTICS AND OPTICAL INSTRUMENTS |
10. | WAVE OPTICS |
11. | DUAL NATURE OF MATTER AND RADIATION |
12. | ATOMS |
13. | NUCLEI |
14. | SEMI CONDUCTOR ELECTRONICS┬а |
15. | COMMUNICATION SYSTEMS |