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 |
(d) Potential v/s capacitance to give a constant charge
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A bar magnet is oscillating in the Earth’s magnetic field with a period T. What happens to its period and motion if its mass is quadrupled
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(a) Motion remains S.H.M. with time period = 2T |
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(b) Motion remains S.H.M. with time period = 4T |
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(c) Motion remains S.H.M. and period remains nearly constant |
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(d) Motion remains S.H.M. with time period = |
The 21 cm radio wave emitted by hydrogen in interstellar space is due to the interaction called the hyperfine interaction is atomic hydrogen. the energy of the emitted wave is nearly
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(a) |
(b) 1 Joule |
(c) 7 |
(d) |
Mean life of a radioactive sample is 100 seconds. Then its half life (in minutes) is
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(a) 0.693 |
(b) 1 |
(c) 10-4 |
(d) 1.155 |
The mechanism of the heat produced in a conductor when an electric current flows through it, can be explained on the basis of
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(a) Viscosity |
(b) Friction |
(c) Free electron theory |
(d) Gauss's theorem |
