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

A sphere, a cube and a thin circular plate, all having the same mass and made of the same material are heated to the same temperature and them allowed to cool. Which of them cools fastest ?

A

Sphere

B

Cube

C

Circular plate

D

All at same rate

Text Solution

Verified by Experts

The correct Answer is:
C
(3) Thin circular plate has maximum surface area.
Rate of cooling `prop` Surface area
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  16. A hot liquid is kept in a big room. The logarithm of the numerical val...

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