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You are given a sphere, a cube and a thin circular plate, all made from copper and all having the same mass. If they are heated to a temperature of 200°C, then which are of them will cool fasted? (a) Sphere (b) Thin circular plate (c) Cube (d) All at the same rate

You are given a sphere, a cube and a thin circular plate, all made from copper and all having the same mass. If they are heated to a temperature of 200°C, then which are of them will cool fasted?
(a) Sphere
(b) Thin circular plate
(c) Cube
(d) All at the same rate

Grade:Upto college level

2 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
one year ago
Dear student

The answer is option a

Regards
Vikas TU
14149 Points
one year ago
Dear student 
The circular plate will cool fastest and the sphere will cool the slowest . The rate of heat transfer is directly proportional to the surface area.and the circular platte has a greater surface area.

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