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Questions  

Two spheres A and B have diameters in the ratio 1 : 2, densities in the ratio 2 : 1 and specific heats in the ratio 1 : 3; find the ratio of their thermal capacities

a
1 : 6
b
1 : 12
c
1 : 3
d
1 : 4

detailed solution

Correct option is B

mACAmBCB=(4/3)πrA3ρACA(4/3)πrB3ρBCB=rArB3ρACAρBCB=1232113=112.

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Two spheres of radii in the two ratios 2 : 3 have specific heat in the ratio 3 : 2. What is the ratio of their thermal capacities?


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