Question

The silvered walls of a vacuum flask enable heat transfer by.

a) conduction and radiation
b) radiation only
c) convection only
d) conduction only
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Answer 1

Answer:

conduction and radiation

Answer 2

★᭄ꦿ᭄Answer★᭄ꦿ᭄

Heat transfer by conduction and convection works by particles colliding and transferring energy, as there are no particles in a vacuum heat transfer can only occur by radiation. This is because radiation involves electromagnetic waves, not particles, and is therefore able to transmit heat across a vacuum.

Option A