#### Question

The power radiated by linear antenna of length T is proportional to........................

(λ= wavelength)

- `lambda/ l`
- `[lambda/l]^2`
- `l/lambda`
- `[l/lambda]^2`

#### Solution

(d) (l/λ)^{2}

Effective power radiated by the antenna would be too small, because the power radiated by a linear antenna of length ‘l’ into space is (l/λ)^{2}.

As high powers are needed for good transmission, so higher frequency is required which can be achieved by modulation.

Is there an error in this question or solution?

#### APPEARS IN

Solution The Power Radiated by Linear Antenna of Length T is Proportional to Concept: Need for Modulation and Demodulation.