Physics · Electromagnetic Waves
A linearly polarised electromagnetic wave in vacuum given by E = 3.1 cos(1.8z - 5.4 × 106t)î N/C is incident normally on a perfectly reflecting wall at z = a. Choose the correct statement regarding the reflected wave.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The reflected wave will be 3.1 cos(1.8z + 5.4 × 106t)î N/C.✓
- 2The reflected wave will be 3.1 cos(1.8z - 5.4 × 106t)î N/C.
- 3The frequency of the electromagnetic wave is 54 × 104 Hz.
- 4The wavelength of the wave is 5.4 m.
Correct answer
The reflected wave will be 3.1 cos(1.8z + 5.4 × 106t)î N/C.
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