- AFerrimagnetism.
- BFerromagnetis.
- CParamagnetism.
- DDiamagnetism.
Explanation:
A superconductor exhibits perfect diamagnetism.
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X-rays and gamma rays are both electromagnetic waves. Which of the following statements is true
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(a) In general X-rays have larger wavelength than of gamma rays |
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(b) X-rays have smaller wavelength than that of gamma rays |
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(c) Gamma rays have smaller frequency than that of X-rays |
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(d) Wavelength and frequency of X-rays are both larger than that of gamma rays |
For a nucleus to be stable, the correct relation between neutron number N and Proton number Z is
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(a) N > Z |
(b) N = Z |
(c) N < Z |
(d) N ≥ Z |
The total charge induced in a conducting loop when it is moved in magnetic field depends on
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(a) The rate of change of magnetic flux |
(b) Initial magnetic flux only |
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(c) The total change in magnetic flux |
(d) Final magnetic flux only |
If the binding energy of the electron in a hydrogen atom is 13.6 eV, the energy required to remove the electron from the first excited state of
is
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(a) 122.4 eV |
(b) 30.6 eV |
(c) 13.6 eV |
(d) 3.4 eV |
What is the stopping potential when the metal with work function 0.6 eV is illuminated with the light of 2 eV
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(a) 2.6 V |
(b) 3.6 V |
(c) 0.8 V |
(d) 1.4 V |
The relaxation time in conductors
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(a) Increases with the increase of temperature |
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(b) Decreases with the increase of temperature |
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(c) It does not depend on temperature |
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(d) All of sudden changes at 400 K |