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# Try this! A signal is to be transmitted through a wave of wavelength λ, using a linear antenna. The length l of the antenna and effective power radiated Peff will be given respectively as : (K is a constant of proportionality)

A signal is to be transmitted through a wave of wavelength λ, using a linear antenna. The length l of the antenna and effective power radiated Peff will be given respectively as : (K is a constant of proportionality)

• Option 1)

• Option 2)

• Option 3)

• Option 4)

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As we learnt in

Range of transmitting antenna -

$d_{T}= \sqrt{2h_{T}R}$

- wherein

$h_{T}=$ height of antenna

$R=$ Radius of earth

Length of antenna = Comparable to $\lambda$

Power radiated by linear antenna inversly depends on the square wavelength and directly on the length of antenna.

Hence, $Power=\mu \left(\frac{1}{\lambda} \right )^{2}$

$\mu = k$

Correct option is 1.

Option 1)

This is the correct option.

Option 2)

This is an incorrect option.

Option 3)

This is an incorrect option.

Option 4)

This is an incorrect option.

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