About $5\%$ of the power of a low light bulb is converted to visible radiation . What is the average intensity of visible radiation , at a distance of 1m from the bulb ?

Question

$\begin{array}{1 1} 0.4\;wm^{-2} \\ 0.4\;wm^{2} \\ 4.0\;wm^{-2} \\ 4.0\;wm^{2} \end{array}$