- An anticlockwise current-pulse.
- A clockwise current-pulse.
- An anticlockwise current-pulse and then a clockwise current-pulse.
- A clockwise current-pulse and then an anticlockwise current-pulse.
Explanation:
An anticlockwise current-pulse generated and then a clock-wise current pulse.
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Assertion : The presence of water molecules makes separation of ions easier in electrolyte.
Reason : The presence of water molecules in electrolyte decreases the resistance of electrolyte.
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |
If a change in current of 0.01 A in one coil produces a change in magnetic flux of 1.2
in the other coil, then the mutual inductance of the two coils in henries is
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(a) 0 |
(b) 0.5 |
(c) 1.2 |
(d) 3 |
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 |
The pole strength of a bar magnet is 48 ampere-metre and the distance between its poles is 25 cm. The moment of the couple by which it can be placed at an angle of 30o with the uniform magnetic intensity of flux density 0.15 Newton /ampere-metre will be
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(a) 12 Newton × metre |
(b) 18 Newton × metre |
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(c) 0.9 Newton × metre |
(d) None of the above |