What is the energy of photons with wavelength 600 nm? People have proposed to us
ID: 1521270 • Letter: W
Question
What is the energy of photons with wavelength 600 nm?People have proposed to use a solar sail to help move spacecraft to other plants. Assuming sunlight(in space) has a wavelength of 600nm hoe much momentum will the sunlight impart on a solar sail (per cm^2) if the sunlight has a total energy of 0.13 w/cm2
How many 600nm photons are there in a 0.13w:cm2 beam of 600nm light? What is the energy of photons with wavelength 600 nm?
People have proposed to use a solar sail to help move spacecraft to other plants. Assuming sunlight(in space) has a wavelength of 600nm hoe much momentum will the sunlight impart on a solar sail (per cm^2) if the sunlight has a total energy of 0.13 w/cm2
How many 600nm photons are there in a 0.13w:cm2 beam of 600nm light?
People have proposed to use a solar sail to help move spacecraft to other plants. Assuming sunlight(in space) has a wavelength of 600nm hoe much momentum will the sunlight impart on a solar sail (per cm^2) if the sunlight has a total energy of 0.13 w/cm2
How many 600nm photons are there in a 0.13w:cm2 beam of 600nm light?
Explanation / Answer
a) Energy of photon, E = h*c/lamda
= 6.626*10^-34*3*10^8/(600*10^-9)
= 3.313*10^-19 J
b) momentum impoarted by phtons = I/c
= 0.13/(3*10^8)
= 4.33*10^-10 kg.m/s (per cm^2)
c) let N is the no of phtotns incident on the given surface per cm^2, N = E/E_phton
= 0.13/(3.313*10^-19)
= 3.92*10^17 (per cm^2 per second)
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