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Nickel shows ferromagnetic property at r...

Nickel shows ferromagnetic property at room temperature. If the temperature is increased beryond Curie temperatue,then it will show

A

diamagnetism

B

paramagnetism

C

anti ferromagnetism

D

no magnetic property

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Knowledge Check

  • In semiconductors at room temperature :

    A
    the valence band is completely filled and the conduction band is partially filled.
    B
    the valence band is completely filled .
    C
    the conduction band is completely empty .
    D
    the valence band is partially empty and the conduction band is partially filled

  • In semiconductors at a room temperature

    A
    the valence band is partially empty and the conduction band is partially filled
    B
    the valence band is completely filled
    C
    the valence band is completely filled and the conduction band is partially filled
    D
    the conduction band is completely empty

  • If the temperature of hot junction is increased beyond inversion temperature then the thermo emf

    A
    is constant
    B
    Changes sign and increases
    C
    decreases
    D
    becomes zero

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