Explanation:
Radiation pressure is given by $\text{P}_\text{R}=\frac{(1+\alpha)\text{I}}{\text{C}}$
where α is the coefficient of reflection of the surface.
For completely reflecting surface $\alpha=1$
For completely absorbing surface $\alpha=0$
So, radiation pressure depends on the nature of surface on which the light is falling but independent of wavelength of light falling.
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Nuclear fusion is common to the pair
| (a) Thermonuclear reactor, uranium based nuclear reactor |
| (b) Energy production in sun, uranium based nuclear reactor |
| (c) Energy production in sun, hydrogen bomb |
| (d) Disintegration of heavy nuclei, hydrogen bomb |
Four condensers each of capacity 4μF are connected as shown in figure. 
The energy stored in the system is
|
(a) 2400 ergs |
(b) 1800 ergs |
(c) 3600 ergs |
(d) 5400 ergs |
Energy of electron in a orbit of H-atom is
|
(a) Positive |
(b) Negative |
(c) Zero |
(d) Nothing can be said |
A short bar magnet placed with its axis at 30° with a uniform external magnetic field of 0.16 Tesla experiences a torque of magnitude 0.032 Joule. The magnetic moment of the bar magnet will be
|
(a) 0.23 Joule/Tesla |
(b) 0.40 Joule/Tesla |
(c) 0.80Joule/Tesla |
(d) Zero |