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 is
A
` 5xx 10^(14) `
B
`5 xx 10^(15) `
C
` 5xx 10^(15) `
D
`5 xx 10^(17)`
Text Solution
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The correct Answer is:
B
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