A plane electromagnetic wave of wavelength 2.00 m travels in vacuum in the negative x-direction with...

A plane electromagnetic wave of wavelength 2.00 m travels in vacuum in the negative x-direction with its magnetic field vector B, of amplitude 1.20 μT, directed along the positive y-axis.

(i) What is the frequency, f, of the wave? [2]

(ii) What are the direction and the amplitude, E_o, of the electric field vector E associated with the wave ? [4]

(iii) If B = B_ocos ( kx + ωt ) in SI units , what are the values of k and ω? [4]

(iv) If the wave falls perpendicularly on to a perfectly reflecting sheet of area 1.60 m², at what rate is momentum delivered to the sheet, and what is the radiation pressure on it ?

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genius_generous answered 1 year ago

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