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Calculate the number of photons emitted ...

Calculate the number of photons emitted per second by a 10 watt sodium vapor lamp. Assume that 90% of the consumed energy is converted into light. Wavelength of sodium light is 590nm. `h=6.62xx10^(-34)Js`

A

`0.267xx10^(18)`

B

`0.267xx10^(19)`

C

`0.267xx10^(20)`

D

`0.267xx10^(17)`

Text Solution

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The correct Answer is:
C
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