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To radiate EM signal of wavelength \(\lambda\) with high efficiency, the antennas should have a minimum size equal to: […

Q1

To radiate EM signal of wavelength \(\lambda\) with high efficiency, the antennas should have a minimum size equal to:

[JEE Main 2023, 13 Apr (Shift 2)]

a

\(\frac{\lambda }{2}\)

b

\(\frac{\lambda }{4}\)

c

\(2\lambda\)

d

\(\lambda\)

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