PhysicsMedium79×since 2003Q6328To radiate EM signal of wavelength λ\lambdaλ with high efficiency, the antennas should have a minimum size equal to:Aλ2\frac{\lambda}{2}2λBλ\lambdaλCλ4\frac{\lambda}{4}4λD2λ2 \lambda2λCheck answerSkip