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Electromagnetic Waves question

2019 · 11 Jan · Shift 2 · Q58
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Electromagnetic Waves question

2019 · 11 Jan · Shift 2 · Q58

JEE MainPhysicsElectromagnetic WavesMCQ+4 / −1
A 27 mW laser beam has a cross-sectional area of 10 mm2. The magnitude of the maximum electric field in this electromagnetic wave is given by : [Given permittivity of space ∈\in∈ 0 = 9 ×\times× 10–12 SI units, Speed of light c = 3 ×\times× 108 m/s]
  1. A
    2 kV/m
  2. B
    1 kV/m
  3. C
    1.4 kV/m
  4. D
    0.7 kV/m
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