Physics, 07.04.2020 16:54 kiingbr335yoqzaxs
He-Ne lasers are often used in physics demonstrations. They produce light of wavelength 633 nm and a power of 0.750 mW spread over a cylindrical beam 1.35 mm in diameter (although these quantities can vary).
Part A
What is the intensity of this laser beam?
I=W/m^2
Part B
What is the maximum value of the electric field?
Emax=V/m
Part C
What is the maximum value of the magnetic field?
Bmax=uT
Part D
What is the average energy density in the laser beam?
Uav=J/m^3
Answers: 3
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