What is relation between photon and intensity of radiation ?
What is relation between photon and intensity of radiation ?
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- [JEE MAIN 2019]
How many photons are emitted by a laser source of $5 \times 10^{-3} \,W$ operating at $632.2 \,nm$ in $2 \,s$ is .......$\times 10^{16}$ $\left(h=6.63 \times 10^{-34} \,Js \right)$
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