1.

A bulb emits light of λ=4500 oA. The bulb is rated as 150 watt and 8% of the energy is emitted as light. How many photons are emitted by the bulb per second?

Answer»

A bulb emits light of λ=4500 oA. The bulb is rated as 150 watt and 8% of the energy is emitted as light. How many photons are emitted by the bulb per second?



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