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PhysicsNEET 2023Electromagnetic spectrum

Electromagnetic Waves

In a plane electromagnetic wave travelling in free space, the electric field component oscillates sinusoidally at a frequency of 2.0×10102.0 \times 10^{10} Hz and amplitude 48 V m−148\ \mathrm{V\,m^{-1}}. Then the amplitude of the oscillating magnetic field is (speed of light in free space =3×108 m s−1= 3 \times 10^{8}\ \mathrm{m\,s^{-1}}):

  1. A.1.6×10−91.6 \times 10^{-9} T
  2. B.1.6×10−81.6 \times 10^{-8} T
  3. C.1.6×10−71.6 \times 10^{-7} T✓
  4. D.1.6×10−61.6 \times 10^{-6} T

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