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Electromagnetic Waves question

2021 · 25 Jul · Shift 1 · Q59
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  5. /2021 · 25 Jul · Shift 1 · Q59

Electromagnetic Waves question

2021 · 25 Jul · Shift 1 · Q59

JEE MainPhysicsElectromagnetic WavesMCQ+4 / −1
A linearly polarized electromagnetic wave in vacuum is E=3.1cos⁡[(1.8)z−(5.4×106)t]i^N/CE = 3.1\cos \left[ {(1.8)z - (5.4 \times {{10}^6})t} \right]\widehat iN/CE=3.1cos[(1.8)z−(5.4×106)t]iN/C is incident normally on a perfectly reflecting wall at z = a. Choose the correct option
  1. A
    The wavelength is 5.4 m
  2. B
    The frequency of electromagnetic wave is 54 ×\times× 104 Hz.
  3. C
    The transmitted wave will be 3.1cos⁡[(1.8)z−(5.4×106)t]i^N/C3.1\cos \left[ {(1.8)z - (5.4 \times {{10}^6})t} \right]\widehat iN/C3.1cos[(1.8)z−(5.4×106)t]iN/C
  4. D
    The reflected wave will be 3.1cos⁡[(1.8)z+(5.4×106)t]i^N/C3.1\cos \left[ {(1.8)z + (5.4 \times {{10}^6})t} \right]\widehat iN/C3.1cos[(1.8)z+(5.4×106)t]iN/C
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