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Monochromatic light of frequency 6.0xx10...

Monochromatic light of frequency `6.0xx10^(14)` Hz is produced by a laser.The power emitted is `2.0xx10^(-3)` W. (a)What is the energy of a photon in the light beam?(b)How many photons per second.on an average ,are emitted by the source?

A

`6xx10^(14)`

B

`5xx10^(15)`

C

`1.99xx10^(16)`

D

`5xx10^(16)`

Text Solution

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The correct Answer is:
B
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