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A ruby laser produces radiations of wave...

A ruby laser produces radiations of wavelength, `662.6nm` in pulse whose duration are `10^(-9)s`. If the laser produces `0.39 J` of energy per pulse, how many protons are produced in each pulse?

A

`1.3xx10^(9)`

B

`1.3xx10^(18)`

C

`1.3xx10^(27)`

D

`3.9xx10^(18)`

Text Solution

Verified by Experts

The correct Answer is:
b
`E=n(hc)/(lambda)implies n= (Elambda)/(hc)`
`=(0.39xx10^(-9)xx662.6)/(6.626xx10^(-34)xx3xx10^(8))`
`=1.3xx10^(18)`
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