- AC = Q/V.
- BC = V/Q.
- CC = QV.
- DQ = C/V
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What physical quantities may X and Y represent ? (Y represents the first mentioned quantity)

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(a) Pressure v/s temperature of a given gas (constant volume) |
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(b) Kinetic energy v/s velocity of a particle |
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(c) Capacitance v/s charge to give a constant potential |
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(d) Potential v/s capacitance to give a constant charge |
A man of length h requires a mirror, to see his own complete image of length at least equal to
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(a) |
(b) |
(c) |
(d) h |
An electron moving towards the east enters a magnetic field directed towards the north. The force on the electron will be directed
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(a) Vertically upward |
(b) Vertically downward |
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(c) Towards the west |
(d) Towards the south |
The first member of the Paschen series in hydrogen spectrum is of wavelength 18,800 Å. The short wavelengths limit of Paschen series is
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(a) 1215 Å |
(b) 6560 Å |
(c) 8225 Å |
(d) 12850 Å |