Radiation: Two identical objects are placed in a room with a temperature of 20°C. Object A has a temperature of 50°C, while object B has a temperature of 90°C. What is the ratio of the net power emitted by object B to the power emitted by object A?

A. 1.7
B. 2.8
C. 81
D. 17
E. 21


Answer: B

Physics & Space Science

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