If the radii of two copper spheres are in the ratio 1:3 and their increase in the temperatures are in the ratio 9:1 then the ratio of the increase in their thermal energy will be
a.1:4
b.2:1
c.4:1
d.1:3
If the radii of two copper spheres are in the ratio 1:3 and their increase in the temperatures are in the ratio 9:1 then the ratio of the increase in their thermal energy will be
a.1:4
b.2:1
c.4:1
d.1:3