A signal is to be transmitted through a wave of wavelength

PHYSICS · Single correct · A Level · Physics · Electronics · Electronics

Problem

\lambda

, using a linear antenna. The length

l

of the antenna and effective power radiated

P_{\text{eff}}

will be given respectively as : (K is a constant of proportionality) (1)

\lambda, P_{\text{eff}} = K \left(\frac{1}{\lambda}\right)^2

(2)

\frac{\lambda}{8}, P_{\text{eff}} = K \left(\frac{1}{\lambda}\right)

(3)

\frac{\lambda}{16}, P_{\text{eff}} = K \left(\frac{1}{\lambda}\right)^3

(4)

\frac{\lambda}{5}, P_{\text{eff}} = K \left(\frac{1}{\lambda}\right)^2