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(i) Mono chromatic light of frequency 6....

(i) Mono chromatic light of frequency `6.0xx10^(14)Hz` is produced by a laser. The power emitted is `2.0xx10^(-3)W`. Estimate the number of photons emitted per second on an average by the source.
(ii) Draw a plot showing the variation of photoelectric current versus the intensity of incident radiation on a given photosensitive surface.

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Given that `v=6xx10^(14)Hz`
`P=Q=2xx10^(-3)J//s`
number of photons emitted per sec by the source.
`rArr n(P)/(nv)=(2xx10^(-3))/(6.62xx10^(-34)xx6xx10^(14))`
`=0.5035xx10^(-15)` per second.
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