Question

A solid sphere and a hollow sphere of the same material and of equal radii are heated to the same temperature.
(a) Both will emit equal amount of radiation per unit time in the biginning
(b) Both will absorb equal amount of radiation from the surrounding in the biginning.
(c) The initial rate of cooling (dT/dt) will be the same for the two spheres
(d) The twp spheres will have equal temperature at any instant

Answer 1

Answer:

A solid sphere and a hollow sphere of the same material and of equal radii are heated to the same temperature.

Answer 2

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$<b>$(c) The initial rate of cooling (dT/dt) will be the same for the two spheres.

(d) The twp spheres will have equal temperature at any instant.

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