Question
Amplitude of the electric field in the beam?
Step 1
The power of the laser $P$ is given as 200 watts and the cross-sectional area $A$ is given as 1.00 mm$^2$, which is equivalent to $1.00 \times 10^{-6}$ m$^2$. Show more…
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Key Concepts
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The amplitude of electric field in a parallel beam of light of intensity $4 \mathrm{Wm}^{-2}$ is (a) $40.5 \mathrm{NC}^{-1}$ (b) $45.5 \mathrm{NC}^{-1}$ (c) $50.5 \mathrm{NC}^{-1}$ (d) $55.5 \mathrm{NC}^{-1}$
Electromagnetic Waves
Round 1
The $\mathrm{rms}$ value of the electric field in a certain light wave is $0.200 \mathrm{~V} / \mathrm{m}$. What is the amplitude of the associated magnetic field?
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Polarization
Transcript
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