- AAdditivity of charge.
- BQuantisation of charge.
- CConservation of charge.
- DAttraction and repulsion.
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Shown in the figure is a circular loop of radius r and resistance R. A variable magnetic field of induction
is established inside the coil. If the key (K) is closed, the electrical power developed right after closing the switch is equal to

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(a) |
(b) |
(c) |
(d) |
Assertion : In the process of photoelectric emission, all the emitted photoelectrons have the same kinetic energy.
Reason : The photon transfers its whole energy to the electron of the atom in photoelectric effect.
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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 assertion is false but reason is true. |
If the atom follows the Bohr model and the radius of
is n times the Bohr radius, then find n
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(a) 100 |
(b) 200 |
(c) 4 |
(d) |
A capacitor of 10mF charged up to 250 volts is connected in parallel with another capacitor of 5mF charged up to 100 volts. The common potential is
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(a) 500 V |
(b) 400 V |
(c) 300 V |
(d) 200 V |