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A 100 W point source emits monochromatic...

A 100 W point source emits monochromatic light of wavelength `6000 A`
Q. Calculate the total number of photons emitted by the source per second.

Text Solution

Verified by Experts

The energy of each photon
`E=(hc)/(lamda)=((6.6xx10^(-34))xx(3xx10^(8)))/(6000xx10^(-10))`
`=3.3xx10^(-19)J`
The number of photon emitted per second
`n=("Power")/E=100/(3.3xx10^(-19))=3xx10^(20)`
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