AP EAMCET · PHYSICS · Electromagnetic Waves
The amplitude of the electric field in a parallel beam of plane electromagnetic waves of intensity is
(Permittivity of free space )
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
The expression for the electromagnetic wave is, I=12ε0E02c Rewrite the above equation. E0=2Iε0c Substitute the values in the above equation. E0=2×53.18.85×10-12×3×108=200 N C-1
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