When a magnetic substance is heated,then it

  • A
    Becomes a strong magnet
  • B
    Loses its magnetism
  • C
    Does not affect the magnetism
  • D
    Either $(A)$ or $(C)$

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Which of the following statements is true?

$A$ frog can be levitated in a magnetic field produced by a current in a vertical solenoid placed below the frog. This is possible because the body of the frog behaves as

Explain paramagnetism and paramagnetic substances.

Match List-$I$ with List-$II$.
List-$I$ (Material)List-$II$ (Susceptibility $(\chi)$)
$A$. Diamagnetic$I$. $\chi=0$
$B$. Ferromagnetic$II$. $0 > \chi \geq -1$
$C$. Paramagnetic$III$. $\chi >> 1$
$D$. Non-magnetic$IV$. $0 < \chi < \varepsilon$ (a small positive number)

Choose the correct answer from the options given below:

The magnetic susceptibility is negative for

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