Question
In: Chemistry
A laser produces 25.0 mW of light. In 4.00 hr , the laser emits 6.04×1020 photonsWhat...
A laser produces 25.0 mW of light. In 4.00 hr , the laser emits 6.04×1020 photonsWhat is the wavelength of the laser?
Solutions
Expert Solution
Power = 25.0 mW
= 0.025 W
time = 4.00 hr
= 4.00*3600 s
= 14400 s
use:
Energy = power * time
= 0.025 W * 14400 s
= 360 J
This is energy of 6.04*10^20 photons
so,
energy of 1 photon = Energy / number of photon
= 360 J / (6.04*10^20)
= 5.96*10^-19 J
use:
E = h*c/lambda
5.96*10^-19J =(6.626*10^-34 J.s)*(3.0*10^8 m/s)/lambda
lambda = 3.34*10^-7 m
Answer: 3.34*10^-7 m
queen_honey_blossom answered 2 years agoRelated Solutions
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