What temperature increase is necessary to increase the power radiated from an object by a factor of 8?
A)8 K
B)2 K
C)100%
D)about 68%
E)about 168%

Question

What temperature increase is necessary to increase the power radiated from an object by a factor of 8?​
A)8 K
B)2 K
C)100%
D)about 68%
E)​about 168%

Quizplus · Accepted Answer

The power radiated by an object is proportional to the fourth power of its temperature (Stefan-Boltzmann Law). To increase the power by a factor of 8, the temperature must increase by a factor of 8^(1/4) ≈ 1.68, which is about a 68% increase.

What Temperature Increase Is Necessary to Increase the Power Radiated