Question

A sphere,a cube and a thin circular plate have the same mass and are made of the same material all of them are heated to same temperature. The rate of cooling is
a) the maximum for the sphere and minimum for the plate
b) the maximum for the sphere and minimum for the cube
c) both a and b
d)none of the above
(UPSEE 2013)

Answer 1

maximum for sphere and minimum for plate since plate has more surface area