Q8 of 27 Page 77

A sphere, a cube and a thin circular plate, all of same material and same mass are initially heated to same high temperature.

loss of heat on cooling is directly proportional to the following factors

(i) surface area exposed to surrounding


(ii) temperature difference between body and surrounding


(iii) material of object


Also we know that surface area of sphere is minimum and of circular plate is maximum.


So option (c) s correct and rests are wrong.

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