AP EAMCET20228 Jul 2022Morning ShiftPhysicsElectromagnetic WavesActual
In a plane electromagnetic wave, the maximum value of the electric field component is 4.4 Vm ⁻¹ . The intensity of the wave is nearly
Options
- A22.4 ~mW ~m ⁻²
- B25.7 ~mW ~m ⁻²
- C65.5 ~mW ~m ⁻²
- D45.6 ~mW ~m ⁻²
Correct answer
B. 25.7 ~mW ~m ⁻²
Step-by-step solution
We know that I = 1 2 ₀ E ₀^2 C aligned & = 1 2 8.85 10⁻¹² 4.4^2 3 10^8 & =25.7 ~mW / m ^2 aligned