Home
Class 12
PHYSICS
If both the length of an antenna and the...

If both the length of an antenna and the wavelength of the signal to be transmitted are doubled, the power radiated by the antenna

A

Is doubled

B

Is halved

C

Remains constant

D

Is quadrupled

Text Solution

Verified by Experts

The correct Answer is:
C
Power radiated `prop (1/lamda)^2`
As I and `lamda` are doubled power remain constant.
Promotional Banner

Similar Questions

Explore conceptually related problems

Effective power radiated by an antenna is

If lambda is wavelength of radio signals to be transmitted, then the length of Hertz antenna is

A 25m long antenna is mounted on an antenna towe. The height of the ancora towels 75 m The wavelength (in meter) of the signal transmitted by this antenna would be

Advantage of HF transmission is ( A ) that the length of antenna is small ( B ) that the antenna can be mounted at larger heights ( C ) that the power radiated is more for a given length of antenna

A signal is to be transmitted through a wave of wavelength lambda , using a linear antenna. The length 1 of the antenna and effective power radiated P_(eff) will be given respectively as : (K is a constant of proportionality)

Length of antenna required to transmit the signals of frequency 100 MHz is nearly

Statement-I : For the same antenna length, power radiated by short wavelength signals would be large. Statement-II : Because power radiated prop (1)/(lamda^(2))

The length of half wave dipole antenna at 50 MHz is

How does the effective power radiated by an antenna vary with wavelength?

An antenna is mounted on a 400 m tall building. What will be the wavelength of signal that can be radiated effectively by the transmission tower upto a range of 44 km ?