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A sphere, a cube and a thin circular pla...

A sphere, a cube and a thin circular plate, all of same material and same mass are initially heated to same high temperture.

A

Plate will cool fastet and cube the slowest.

B

Sphere will cool fastest and cube the slowest.

C

Plate will cool fastest and sphere the slowest.

D

Cube will cool fastest and plate the slowest.

Text Solution

Verified by Experts

The correct Answer is:
C
The circular plate has maximum surface area and as such it cools the fastest. For a given volume (mass in this case), a sphere has the least surface area and accordingly cools the slowest.
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