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Calculate the number of photons emitted ...

Calculate the number of photons emitted per second by a 10 W sodium vapour lamp. Assume that 60% of the consumed energy is converted into light. Wavelengths of sodium light =590nm.

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The correct Answer is:
`(354xx10^(-8))/(hc)=1.77xx10^(19)`
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RESONANCE ENGLISH-ATOMIC PHYSICS-Exercise 1 Part-1 subjective questions
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