NEET PhysicsClass 12Speed in vacuum and in mediaMediumSingle correct

The electric field of an em wave in vacuum is E_y = E₀ sin(kx − ωt), with ω = 6.0 × 10⁹ rad s⁻¹. What is its wavelength? (c = 3.0 × 10⁸ m s⁻¹)

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The electric field of an em wave in vacuum is E_y = E₀ sin(kx − ωt), with ω = 6.0 × 10⁹ rad s⁻¹. What is its wavelength? (c = 3.0 × 10⁸ m s⁻¹)

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