Average energy stored in a pure inductance L when a current i flows through it, is
|
(a) |
(b) |
(c) |
(d) |
Average energy stored in a pure inductance L when a current i flows through it, is
|
(a) |
(b) |
(c) |
(d) |
(d)
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Hubble's law is related with
|
(a) Comet |
(b) Speed of galaxy |
(c) Black hole |
(d) Planetary motion |
With the increase in principle quantum number, the energy difference between the two successive energy levels
|
(a) Increases |
|
(b) Decreases |
|
(c) Remains constant |
|
(d) Sometimes increases and sometimes decreases |
In which of the following the final image is erect?
Out of gravitational, electromagnetic, Vander Waals, electrostatic and nuclear forces; which two are able to provide an attractive force between two neutrons
|
(a) Electrostatic and gravitational |
|
(b) Electrostatic and nuclear |
|
(c) Gravitational and nuclear |
|
(d) Some other forces like Vander Waals |
Ten electrons are equally spaced and fixed around a circle of radius R. Relative to V = 0 at infinity, the electrostatic potential V and the electric field E at the centre C are
|
(a) V ≠ 0 and |
(b) V ≠ 0 and |
(c) V = 0 and |
(d) V = 0 and |
The ground state energy of hydrogen atom is – 13.6 eV. What is the potential energy of the electron in this state
| (a) 0 eV | (b) – 27.2 eV | (c) 1 eV | (d) 2 eV |
The wave theory of light was given by
|
(a) Maxwell |
(b) Planck |
(c) Huygen |
(d) Young |
The energy consumed in 1 kilowatt electric heater in 30 seconds will be
|
(a) 6 |
(b) 4.99 |
(c) 9.8 |
(d) 3 |