He-ne lasers are often used in physics demonstrations they, Ask an Expert

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He-Ne lasers are often used in physics demonstrations. They produce light of wavelength 633nm and a power of 0.650mW spread over a cylindrical beam 1.35mm 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

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Category:- Physics
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