AP EAMCET20228 Jul 2022Morning ShiftPhysicsElectromagnetic WavesActual
If the amplitude of the magnetic field in a travelling plane electromagnetic wave is 2.2 10⁻⁴ ~T , then the intensity of the wave is nearly
Options
- A5.8 106 Wm ⁻²
- B4.2 106 Wm ⁻²
- C1.2 107 Wm ⁻²
- D8.8 105 Wm ⁻²
Correct answer
A. 5.8 106 Wm ⁻²
Step-by-step solution
I= B₀^2 C 2 ₀ = (2.2 10⁻⁴ )^2 3 10^8 2 4 10⁻⁷ =5.8 10^6 Wm ⁻²