Heat TransferHard
Question
Two spheres of radii in the ratio 1 : 3 and densities in the ratio 2 : 1 and of same specific heat are heated to same temperature and left in the same surrounding. Their rate of falling temperature will be in the ratio :-
Options
A.2 : 3
B.3 : 2
C.4 : 9
D.9 : 4
(S, T, T0 = same)More Heat Transfer Questions
Two identical blocks of metal are at 20oC and 80oC respectively. The specific heat of the material of the two blocks inc...Two stars appear to be red and blue, what is true about them -...There are two identical vessels filled with equal amount of ice, the vessels are of different metals, if the ice melts i...The spectrum from a black body radiation is a :...A cup of tea cools from 80oC to 60oC in one minute. The ambient temperature is 30oC. In cooling from 60oC to 50oC. It wi...