Q 12-08-092JEE MainJEE Main 2023 (13 Apr, Shift 2)Easy
To radiate EM signal of wavelength $\lambda$ with high efficiency, the antennas should have a minimum size equal to
Answer: (C) $\dfrac\lambda4$
For efficient radiation the antenna length should be at least comparable to $\dfrac\lambda4$.
Solution by Sreeraj P, M.Sc Physics