: CBSE Sample Question Papers

(Short/V. Short Questions i.e. 1-2 Marks Questions)

1. Which direction would a compass point to if located right on the geometric north and south pole?
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2. Define neutral point. Write the positions of N.P. when a small bar magnet is placed with its north pole (i) towards north of the earth, (ii) towards south of the earth.
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3. What is the value of angle of dip at a place situated on the magnetic equator of the earth ?
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4. Define the term magnetic moment.
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5. Draw a diagram showing the lines of magnetic field around a bar magnet placed along magnetic meridian, with its north pole pointing towards geographical north.
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6. Distinguish between dia, para magnetic substances. Give one example each.
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7. Define angle of dip at a given place. What is the value of angle of dip on the equator ?
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8. If horizontal and vertical components of earth’s magnetic field are equal at a place, find the angle of dip.
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9. What is the difference between magnetic length and the length of magnet ?
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10. Give Gauss’s theorem in magnetism.
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11. Define magnetic equator, Is it the same as geographical equator ?
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12. What is underlined principle of a vibration magnetometer ?
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13. What are ferrites ?
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14. What is retcntivity and coercivity ?
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15. What is meant by reduction factor ? Define it.
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16. What is uniform magnetic field. How is it represented diagramatically ?
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17. Why cannot two magnetic lines of force intersect each other ?
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18. Define a magnetic line of force ?
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19. Why like poles repel each other and unlike poles attract each other ?
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20. What does result B . ds =0 signify ?
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21. How will compass stand in a field free area ?
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Very Short Answer Type Question

Q. 1. What is the difference between magnetic length and length of a magnet ?
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Q. 2. What happens if a bar magnet is cut into two pieces (i) transverse to its length along its length ?
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Q. 3. Can two poles of a magnet be seperated ?
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Q. 4. What is Gauss’s law of magnetism ?
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Q. 5. How would have Gauss’s theorem been modified if monopoles existed ?
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Q. 6. Can a magnetic field configuration have three poles ?
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Q. 7. Does a bar magnet (dipole) exert a torque upon itself ?
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Q. 8. Does a magnetic monopole exist ? Justify your answer and explain how magnetic field is produced?
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Q. 9. In which direction compass will point if located right to the geomagnetic north or south pole ?
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Q. 10. What are magneti; elements of earth’s magnetic field ?
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Q. 11. Why cannot two magnetic lines of force cross each other ?
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Q. 12. What is non-magnetic material ?
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Q. 13. How can paramagnetic and diamagnetic material rods be distinguished in a magnetic Held ?
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Q. 14. Is permeability of a ferromagnetic material independent of the magnetic field ?
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Q. 15. What is a Curie point ?
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Q. 16. If a toroid used bismuth for its core, will the field in the core be slightly greater or less than when the core is empty ?
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Q. 17. What is used for coating magnetic takes or for building memory stores in a modern computer ?
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Q. 18. What are isoclinic lines ?
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