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  • Question

  • Assertion (A): Magnetic susceptibility of copper is -0.5 x 10-5.

    Reason (R): Copper is diamagnetic material.


  • Options
  • A. Both A and R are true and R is correct explanation of A
  • B. Both A and R are true but R is not correct explanation of A
  • C. A is true but R is false
  • D. A is false but R is true

  • Correct Answer
  • Both A and R are true and R is correct explanation of A 

    Explanation
    If magnetic susceptibility is very low ?, is nearly equal to 1 and the material is diamagnetic.

    Materials and Components problems

    Search Results

    • 1. If the valence electron is separated from a copper atom, the remaining part of atom has a net charge of

    • Options
    • A. 1
    • B. - 1
    • C. 0
    • D. + 3
      • Discuss
    • 2. The orientation polarization of a polyatomic gas is inversely proportional to absolute temperature.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. In a virgin specimen of iron, the direction of spontaneous magnetisation varies from domain to domain.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. A sheet of bakelite is inserted between the plates of an air capacitor. The capacitance will

    • Options
    • A. increase
    • B. decrease
    • C. remain the same
    • D. may increase or decrease
      • Discuss
    • 5. For a given value (n) of principle quantum number, the number of possible electronic states are

    • Options
    • A. n
    • B. n2
    • C. n3
    • D. n
      • Discuss
    • 6. If there are no permanent dipoles in a dielectric material, the dielectric constant is independent of temperature.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. Assertion (A): Diamond and carborudum are both very hard materials.

      Reason (R): Valence band can be extremely strong.


    • Options
    • A. Both A and R are true and R is correct explanation of A
    • B. Both A and R are true but R is not correct explanation of A
    • C. A is true but R is false
    • D. A is false but R is true
      • Discuss
    • 8. Lines of magnetic field cannot intersect.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. The equation D = ?0?r E refers only to isotropic materials.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. The spin angular momentum along a given direction is either or .

    • Options
    • A. True
    • B. False
      • Discuss

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