Discussion :: Physics
- The velocity of heat radiation in vacuum is
|
A.
Equal to that of light |
|
B.
Less than that of light |
|
C.
Greater than that of light |
|
D.
Equal to that of sound |
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Answer : Option A
Explanation :
Electrons are generally responsible for heat conduction. The phonons (vibrations of the nuclei) also play a part, depending on the temperature of the medium. It depends on the specific conductor you’re using. At some point, in a vacuum, the electrons have to be excited enough to spit out photons, which are Electromagnetic radiation, which in a vacuum should go on forever at the speed of light theoretically.
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