Question

The rate of radiation of a black body at $0^{o}C$ is E J/sec. The rate of radiation of this black body at ${273}^{o}C$ will be

• A.
• B.
• C.
• D.

Answer 1

The correct option is

A

As we know, $E\propto T^4$

$\frac{E_1}{E_2}=(\frac{T_1}{T_2}{)}^4\Rightarrow \frac{E_1}{E_2}=(\frac{273+0}{273+273}{)}^4\Rightarrow E_2=16E$