A hollow sphere of radius R, a hollow cube of side R and a thin circular plate o

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Question

A hollow sphere of radius R, a hollow cube of side R and a thin circular plate of radius R, made up of the same 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?

Options:

A . Circular plate

B . Cube

C . Sphere

D . All of them will reach the room temperature at the same time

Answer: Option C
:
C
Option:(c)

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