solve it please......✌✌✌
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ⓗⓔⓨ ⬇⏬⏬⏬ⓤⓡ ⓐⓝⓢ
n= p / hv
= 2×10^-3/ 6.6×10^-34×6×10^14
= 5×10^15
✌✌✌۰۪۫t۪۫۰۰۪۫h۪۫۰۰۪۫a۪۫۰۰۪۫n۪۫۰۰۪۫k۪۫۰۰۪۫s۪۫۰
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Answer:
energy = planks constant × frequency
energy of one photon is = h* freq
power is the energy per unit time
therfore the energy given per second is 2 * 10^-3
number of photons * energy of one photon = total energy
number of photons = (2*10^-3)/(6.636*10^-34 * 6 * 10^14)
approxi mately = 5 * 10^15 photons .
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