Question:
Express the power of a 100 watt bulb in CGS unit
Solution:
1 watt $=1$ Joule $/ \mathrm{sec}=10^{7} \mathrm{erg} / \mathrm{sec}$
So, 100 watt $=10^{9} \mathrm{erg} / \mathrm{sec}$.
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