Monochromatic light of frequency `6.0 xx 10^(14) Hz` is produced by a laser. The power emitted is `2 xx 10^(-3)` w. The number of photons emitted, on the average, by the sources per second isA. `5 xx 10^(14)`B. `5 xx 10^(15)`C. `5 xx 10^(16)`D. `5 xx 10^(17)`

Monochromatic light of frequency `6.0 xx 10^(14) Hz` is produced by a

1.	Monochromatic light of frequency `6.0 xx 10^(14) Hz` is produced by a laser. The power emitted is `2 xx 10^(-3)` w. The number of photons emitted, on the average, by the sources per second isA. `5 xx 10^(14)`B. `5 xx 10^(15)`C. `5 xx 10^(16)`D. `5 xx 10^(17)`
Answer» Correct Answer - B `n=(P)/(hv)=(2xx10^(-3))/(6.62xx10^(-34)xx6xx10^(14))=5xx10^(15)`

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Monochromatic light of frequency `6.0 xx 10^(14) Hz` is produced by a laser. The power emitted is `2 xx 10^(-3)` w. The number of photons emitted, on the average, by the sources per second isA. `5 xx 10^(14)`B. `5 xx 10^(15)`C. `5 xx 10^(16)`D. `5 xx 10^(17)`

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