Question

A sphere a cube and thin circular plate, all made of the same material and having the same mass are initially heated to a temperature of `1000^(@)C`. Which one of these will cool first?
A. Plate will cool fastest 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 .

Answer 1

Correct Answer - C
As three objectes have same volume as per given case, the object having more surface area will radiate nore heat .