About \( 5 \% \) of the power of a \( 100 \mathrm{~W} \) light bulb is converted to visible radi...

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About \( 5 \% \) of the power of a \( 100 \mathrm{~W} \) light bulb is converted to visible radiation. The average intensity of visible raditaion at a distance of \( 1 \mathrm{~m} \) from the bulb:
(a) \( 0.4 \mathrm{~W} / \mathrm{m}^{2} \)
(b) \( 0.5 \mathrm{~W} / \mathrm{m}^{2} \)
(c) \( 0.6 \mathrm{~W} / \mathrm{m}^{2} \)
(d) \( 0.8 \mathrm{~W} / \mathrm{m}^{2} \)
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