Question

156. A hollow sphere of radius R, a hollow cube of side
Rand thin circular plate of radius R made up of the some
material, are all heated to 20°C above room temperature.
When left to cool in the room, which of them will reach
the room temperature first ?
(a) circular plate
(b) cube
(c) sphere
(d) all of them will reach the room temperature at the
same time
​

Answer 1

Answer:

d. all of them is answer ....