Question

A sphere and a cube, both of copper have equal volumes and are black. They are allowed to cool at same temperature and in same atmosphere. The ratio of their rate of loss of heat will be

• A. 1:1
• B. $(\frac{\pi}{6})^{\frac{2}{3}}$
• C. $(\frac{\pi}{6})^{\frac{1}{3}}$
• D. $\frac{4\pi}{3}:1$

Hint:

Physics Tip: For a given volume, a sphere has the minimum surface area. Therefore, it will always have a lower rate of heat loss compared to any other shape of the same volume.

Answer 1

The Correct Option is C