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MCQEasyJEE Main 2026 · 22 January, Shift 2Characteristics of EM Waves

Physics Question from JEE Main 2026 · 22 January, Shift 2

A laser beam has intensity of 4.0×1014 W/m24.0\times10^{14} \, \text{W/m}^2. The amplitude of magnetic field associated with the beam is _____ T\text{T}.

(Take ε0=8.85×10−12 C2/N m2\varepsilon_0=8.85\times10^{-12} \, \text{C}^2/\text{N m}^2 and c=3×108 m/sc=3\times10^8 \, \text{m/s})

  • A

    18.318.3

  • B

    1.831.83

  • C

    5.55.5

  • D

    2.02.0

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