This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Physics Part I > Class 12 Physics (Part I) Chapter 5 Magnetism And Matter – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physics (Part I) Chapter 5 Magnetism And Matter Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. For a diamagnetic substance, the magnetic dipole moment of each of its constituent atom is zero A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. Angle of dip is maximum at- A) Pole. B) Equator. C) Both (a) and (b). D) Neither (a) nor (b). Show Answer Correct Answer: A) Pole. 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. Show Answer Correct Answer: A) Two uniform and mutually perpendicular magnetic fields exist. 4. How does the Earth's magnetic field protect us from solar winds? A) The Earth's magnetic field deflects solar winds, protecting the atmosphere and surface from harmful charged particles. B) The magnetic field generates solar winds, which protect the Earth from cosmic rays. C) Solar winds are absorbed by the Earth's atmosphere, preventing any harm. D) The Earth's magnetic field attracts solar winds, increasing their intensity. Show Answer Correct Answer: A) The Earth's magnetic field deflects solar winds, protecting the atmosphere and surface from harmful charged particles. 5. The magnetic moment of an electron revolving in a circular orbit is given by: A) $\frac{evr}{2m}$. B) $\frac{mvr}{2e}$. C) $\frac{evr}{2}$. D) $\frac{mvr}{2}$. Show Answer Correct Answer: C) $\frac{evr}{2}$. 6. If a magnet is cut perpendicular its length into equal parts, then the pole strength of each pole of the magnet A) Becomes double. B) Remains same. C) Becomes half. D) None of the above. Show Answer Correct Answer: B) Remains same. 7. Energy per unit charge A) Resistance. B) Voltage. C) Work. D) Capacitance. Show Answer Correct Answer: B) Voltage. 8. When a magnetic material is subjected to a very small magnetising force H. The intensity of magnetisation is proportional to: A) $^{ (a) 1 / H}$. B) (b)$^{ H}$. C) (c) H $^{2}$. D) (d) None of these. Show Answer Correct Answer: B) (b)$^{ H}$. 9. The magnetic field lines around a wire carrying a current form a series of concentric circles around the wire A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 10. The S.I. Unit of magnetic pole strength is A) Volt/metre. B) Ampere/metre. C) Ampere/metre-square. D) Ampere-metre. Show Answer Correct Answer: B) Ampere/metre. 11. What is the relationship between electricity and magnetism? A) Electricity can exist without magnetism. B) Electric currents do not affect magnetic fields. C) Electricity and magnetism are interconnected; electric currents produce magnetic fields, and changing magnetic fields can generate electric currents. D) Magnetism is a type of electricity. Show Answer Correct Answer: C) Electricity and magnetism are interconnected; electric currents produce magnetic fields, and changing magnetic fields can generate electric currents. 12. The earth behaves as a magnet with magnetic field pointing approximately from the geographic A) South to North. B) East to West. C) North to South. D) West to East. Show Answer Correct Answer: A) South to North. 13. How is the capacitance (C) of a parallel-plate capacitor affected by the charge on the plates? A) C is accumulated on one side only. B) C is vanished when there are plates. C) C depend on the charge on the plates. D) C does not depend on the charge on the plates. Show Answer Correct Answer: D) C does not depend on the charge on the plates. 14. The ratio of magnetic length to geometric length of a magnet is A) 8.4. B) 0.084. C) 0.84. D) 80.4. Show Answer Correct Answer: C) 0.84. 15. Angle of dip is 90$^\circ$ at A) Equator. B) Poles. C) Tropic of cancer. D) Both poles and equator. Show Answer Correct Answer: B) Poles. 16. A ferromagnetic material is heated above its curie temperature. Which one is a correct statement? A) Ferromagnetic domains are not influenced. B) Ferromagnetic domains are perfectly arranged. C) Ferromagnetic domains become random. D) Ferromagnetic material changes into diamagnetic material. Show Answer Correct Answer: C) Ferromagnetic domains become random. 17. What is the right-hand rule in relation to magnetic fields? A) The right-hand rule determines the speed of electric currents. B) The right-hand rule is used to calculate resistance in circuits. C) The right-hand rule indicates the polarity of batteries. D) The right-hand rule helps visualize the direction of magnetic fields around conductors. Show Answer Correct Answer: D) The right-hand rule helps visualize the direction of magnetic fields around conductors. 18. The correct relation between Bohr magneton and orbital magnetic moment is given by: A) Bohr magneton = orbital magnetic moment. B) Bohr magneton = minimum value of orbital magnetic moment. C) Bohr magneton = maximum value of orbital magnetic moment. D) None of the above. Show Answer Correct Answer: B) Bohr magneton = minimum value of orbital magnetic moment. 19. The gyromagnetic ratio of an electron of charge e and mass m is equal to- A) $e^2 / 2m$. B) E / 2m. C) $e / 2m^2$. D) E / 4m. Show Answer Correct Answer: B) E / 2m. 20. Sour Taste:Chemical or Physical Property A) Chemical Property. B) Physical Property. C) All the above. D) None of the above. Show Answer Correct Answer: B) Physical Property. 21. A large magnet is broken into two pieces so that the lengths are in the ratio 2:1.the pole strength of the two pieces will have ratio A) 2:1. B) 1:1. C) 1:2. D) 4:1. Show Answer Correct Answer: B) 1:1. 22. What is the effect of a magnetic field on a current-carrying conductor? A) A current-carrying conductor generates a magnetic field that cancels the external field. B) A current-carrying conductor will always move in the direction of the magnetic field. C) A current-carrying conductor experiences a force when placed in a magnetic field. D) A magnetic field has no effect on a current-carrying conductor. Show Answer Correct Answer: C) A current-carrying conductor experiences a force when placed in a magnetic field. 23. What is the significance of the Curie temperature in magnetism? A) The Curie temperature marks the transition from ferromagnetism to paramagnetism in a material. B) The Curie temperature determines the color of a magnet. C) The Curie temperature is the temperature at which magnets stop working. D) The Curie temperature is only relevant for non-magnetic materials. Show Answer Correct Answer: A) The Curie temperature marks the transition from ferromagnetism to paramagnetism in a material. 24. Which of the following are the Elements of Earth's magnetic fields? A) (i), (ii) and (iii). B) (i), (ii) and (iv). C) (ii), (iii) and (iv). D) (i), (iii) and (iv). Show Answer Correct Answer: A) (i), (ii) and (iii). 25. A bar magnet of dipole moment 'm' cut into two equal pieces transverse to its length. Dipole moment of each part is A) Remain same. B) M/2. C) 2m. D) None of the above. Show Answer Correct Answer: B) M/2. 26. Magnetic succeptibility for diamagnets are A) Large and positive. B) Small and positive. C) Very small and negative. D) Very large and negative. Show Answer Correct Answer: C) Very small and negative. 27. For making permanent magnet, steel is preferred over soft iron as it has high retentivity as well as high coercivity. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 28. The relative permeability of a substance x is slightly less than unity and that of substance y is slightly more than unity, then A) X is paramagnetic and y is ferromagnetic. B) X is diamagnetic and y is ferromagnetic. C) X and y are paramagnetic. D) X is diamagnetic and y is paramagnetic. Show Answer Correct Answer: D) X is diamagnetic and y is paramagnetic. 29. Which of the following materials is NOT typically magnetic? A) Nickel. B) Cobalt. C) Iron. D) Copper. Show Answer Correct Answer: D) Copper. 30. The strength of the earth's magnetic field is A) Zero everywhere. B) Having very high value. C) Constant everywhere. D) Vary from place to place on the earths surface. Show Answer Correct Answer: D) Vary from place to place on the earths surface. 31. The magnetic dipole moment of a current loop is independent of A) Current in the loop. B) Area of the loop. C) Number of turns. D) Magnetic field in which it is lying. Show Answer Correct Answer: D) Magnetic field in which it is lying. 32. Relative permeability of a magnetic material is 0.5 the material is A) Not a magnetic material. B) Diamagnetic. C) Para magnetic. D) Ferro magnetic. Show Answer Correct Answer: B) Diamagnetic. 33. What are the applications of superconductors in magnetism? A) Electric generators. B) Solar panels. C) Wind turbines. D) Applications of superconductors in magnetism include MRI machines, particle accelerators, and maglev trains. Show Answer Correct Answer: D) Applications of superconductors in magnetism include MRI machines, particle accelerators, and maglev trains. 34. A current loop behaves as a system of ..... As a result, it acts like a magnetic dipole. A) Magnetic pole. B) Charges. C) Both (a) and (b). D) None of these. Show Answer Correct Answer: B) Charges. 35. Angle of declination is the angle between A) Resultant magnetic field intensity due to earth with horizontal. B) Magnetic meridian and geographical meridian. C) The magnetic field of earth and a magnet. D) The magnetic field of earth at poles and equator. Show Answer Correct Answer: B) Magnetic meridian and geographical meridian. 36. Equipotential surfaces A) Are closer in regions of large electric fields compared to regions of lower electric fields. B) Will be more crowded near sharp edges of a conductor. C) Will always be equally spaced. D) Both (a) and (b) are correct. Show Answer Correct Answer: A) Are closer in regions of large electric fields compared to regions of lower electric fields. 37. At a temperature higher than Curie temperature, ferromagnetic substance behaves to as paramagnetic substance A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 38. Magnetic susceptibility of a material is-0.05. The magnetic nature if material is A) Dia magnetic. B) Ferromagnetic. C) Anti ferromagnetic. D) Paramagnetic. Show Answer Correct Answer: A) Dia magnetic. 39. Soft iron is used in making permanent magnets A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 40. To make electromagnet, substance should be A) High permeability and high susceptibility. B) Low permeability and high susceptibility. C) High permeability and low susceptibility. D) Low permeability and low susceptibility. Show Answer Correct Answer: A) High permeability and high susceptibility. 41. In a mass spectrometer, charged particle moves in straight line before leaving the region in the velocity selector. Then it moves in ..... when the charged particle enter a magnetic field region after passing through the velocity selector. A) Straight line. B) Uniform circular motion. C) All the above. D) None of the above. Show Answer Correct Answer: B) Uniform circular motion. 42. Ratio of total intensity of magnetic field at equator to poles is A) 1:1. B) 1:2. C) 2:1. D) None of the above. Show Answer Correct Answer: A) 1:1. 43. A magnet in the core of earth can not be the source of earth's magnetism because: A) Field lines can not come outside from the core of the earth. B) Of very high temperature at the core of the earth. C) Earth is revolving as well as rotating. D) There is no magnet in the core of earth. Show Answer Correct Answer: B) Of very high temperature at the core of the earth. 44. Steel is used in electromagnetic cranes. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 45. What is the value of angle of dip at the magnetic equator? A) Nearly 30$^\circ$. B) 0$^\circ$. C) 90$^\circ$. D) 45$^\circ$. Show Answer Correct Answer: C) 90$^\circ$. 46. What are the characteristics of diamagnetic materials? A) Diamagnetic materials exhibit positive magnetic susceptibility. B) Diamagnetic materials have no unpaired electrons, are weakly repelled by magnetic fields, and exhibit a negative magnetic susceptibility. C) Diamagnetic materials are strongly attracted to magnetic fields. D) Diamagnetic materials have unpaired electrons. Show Answer Correct Answer: B) Diamagnetic materials have no unpaired electrons, are weakly repelled by magnetic fields, and exhibit a negative magnetic susceptibility. 47. What is the name of the phenomenon where a material becomes magnetized when placed in a magnetic field? A) Magnetic Repulsion. B) Magnetic Absorption. C) Magnetic Attraction. D) Magnetic Induction. Show Answer Correct Answer: D) Magnetic Induction. 48. Which statement is true about water changing from a liquid to gas? A) Heat is removed. The molecules moves faster. B) Heat is added. The molecules move faster. C) Heat is removed. The molecules move slower. D) Heat is added. The molecules move slower. Show Answer Correct Answer: B) Heat is added. The molecules move faster. 49. From question 16:The plates of a parallel-plate capacitor are 2.50mm apart, and each carries a charge of magnitude 80.0nC. The plates are in vacuum. The electric field between the plates has a magnitude of 4.00x10$^{6}$V/m. What is the area of each plates? A) 2.26x10$^{-3}$cm$^{2}$. B) 2.26x10$^{-3}$m$^{2}$. C) 22.6m$^{2}$. D) 2.26cm$^{2}$. E) None of the above. Show Answer Correct Answer: B) 2.26x10$^{-3}$m$^{2}$. 50. In a permanent magnet at room temperature A) Magnetic moment of each molecule is zero. B) The individual molecules have non zero magnetic moment which are all perfectly aligned. C) Domains are partially aligned. D) Domains are perfectly aligned. Show Answer Correct Answer: D) Domains are perfectly aligned. 51. What is the term for the process of aligning the magnetic domains in a ferromagnetic material? A) Demagnetization. B) Magnetization. C) Domainization. D) Magneticization. Show Answer Correct Answer: B) Magnetization. 52. At present, north magnetic pole is located at a place in: A) North Canada. B) South Canada. C) Arctic Circle. D) Europe. Show Answer Correct Answer: A) North Canada. 53. If rod temds to move from weaker to stronger field, then nature of material A) Diamagnetic. B) Paramagnetic. C) Ferromagnetic. D) None of above. Show Answer Correct Answer: B) Paramagnetic. 54. In the capacitor, the dielectric can be made out of all sorts of ..... materials and the plates are made of a ..... material. A) Insulating, insulating. B) Conductive, conductive. C) Insulating, conductive. D) Conductive, insulating. Show Answer Correct Answer: C) Insulating, conductive. 55. Two magnets have the same length and the same pole strength, but one of the magnets has a small hole at is center.then A) Both have equal magnetic moment. B) One with hole has small magnetic moment. C) One with hole has large magnetic moment. D) One with hole loses magnetism through the hole. Show Answer Correct Answer: B) One with hole has small magnetic moment. 56. Magnetic susceptibility of diamagnetic substances is A) Small & negative. B) Large & negative. C) Small & positive. D) Large and positive. Show Answer Correct Answer: A) Small & negative. 57. What is the unit of magnetic field strength? A) Tesla (T). B) Ampere (A). C) Ohm ($\Omega$). D) Volt (V). Show Answer Correct Answer: A) Tesla (T). 58. A current loop placed in a magnetic field behaves like a A) Magnetic substance. B) Magnetic pole. C) Magnetic dipole. D) All true. Show Answer Correct Answer: C) Magnetic dipole. 59. A current carrying loop is placed in a uniform magnetic field in four different orientations as shown in figure. Arrange them in the decreasing order of potential energy. A) 1, 2, 3, 4. B) 4, 3, 2, 1. C) 4, 2, 3, 1. D) 1, 4, 2, 3. Show Answer Correct Answer: D) 1, 4, 2, 3. 60. A dip circle is so set that it moves freely in the magnetic meridian. The angle of dip is 40$^\circ$. Now the dip circle is rotated so that the plane in which the needle moves makes an angle of 30$^\circ$ with the magnetic meridian. In this position, the needle will dip by the angle A) 40$^\circ$. B) 30$^\circ$. C) Less than 40$^\circ$. D) More than 40$^\circ$. Show Answer Correct Answer: C) Less than 40$^\circ$. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Physics (Part I) Chapter 5 Magnetism And Matter Quiz 1Class 12 Physics (Part I) Chapter 5 Magnetism And Matter Quiz 3Class 12 Physics (Part I) Chapter 5 Magnetism And Matter Quiz 4Class 12 Physics (Part I) Chapter 1 Electric Charges And Fields QuizClass 12 Physics (Part I) Chapter 2 Electrostatic Potential And Capacitance QuizClass 12 Physics (Part I) Chapter 3 Current Electricity QuizClass 12 Physics (Part I) Chapter 4 Moving Charges And Magnetism QuizClass 12 Physics (Part I) Chapter 6 Electromagnetic Induction Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books