A laser source emits lights of wavelength 62100m and has an output of 35mW calculate how many photons are emitted per minute by this laser sourse
To calculate the number of photons emitted per minute by the laser source, we need to use the formula:
Number of photons = (Power of the laser source / Energy of one photon) * Number of photons emitted per second
Given information:
Wavelength of the laser source (λ) = 62100 m
Output power of the laser source (P) = 35 mW
First, let's calculate the energy of one photon using the equation:
Energy of one photon (E) = (hc) / λ
Where:
h = Planck's constant = 6.626 x 10^-34 J·s
c = speed of light = 3 x 10^8 m/s
Energy of one photon (E) = (6.626 x 10^-34 J·s * 3 x 10^8 m/s) / 62100 m
Now, let's calculate the number of photons emitted per second:
Number of photons emitted per second = Power of the laser source / Energy of one photon
Number of photons emitted per second = (35 mW * 1/1000) / Energy of one photon
Since we have the photons per second, we can calculate the photons per minute by multiplying it by 60 (60 seconds in a minute):
Number of photons emitted per minute = Number of photons emitted per second * 60
Now we can substitute the values and make the calculations to get the final result.