The magnetic field in a plane electromagnetic wave is given by, By = 2× 10⁻⁷sin (π× 10³x + 3π× 10¹¹t) T Calculate the wavelength. (a) π× 10⁻³ m (b) π× 10³ m (c) 2× 10⁻³ m (d) 2× 10³ m

Answer: (c). Compare with B₀sin (kx+ω t): k = π× 10³ m⁻¹. λ = 2π/k = 2ππ× 10³. λ = 2× 10⁻³ m. So the answer is (c).

The magnetic field in a plane electromagnetic wave is given by, By =… | NEET 2020 (Phase 2)

Q50NEET 2020 · PHASE 2Easy

Nature of EM Waves & Wave Equation

The magnetic field in a plane electromagnetic wave is given by,

$B_y = 2\times 10^{-7}\sin(\pi\times 10^{3}x + 3\pi\times 10^{11}t)\text{ T}$

Calculate the wavelength.

Show answer and solution

Answer: (c)

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