Question

In MKS system, Stefan's constant is denoted by $\sigma$ In CGS system multiplying factor of $\sigma$ will be

• A. 1
• B.
• C.
• D.

Answer 1

The correct option is B

In M.K.S system unit of $\sigma$ is $\frac{J}{m^2\times sec\times K^4}$
$\Rightarrow 1\frac{J}{m^2\times sec\times K^4}=\frac{{10}^{7}erg}{{10}^{4}c{m}^2\times sec\times K^4}$
$={10}^3\frac{erg}{c{m}^2\times sec\times K^4}$