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What is the relation between antenna length and frequency?

Important Questions on Communication System

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Physics>Modern Physics>Communication System>Antenna

A TV tower is 120 m high, How much more height is to be added to it if its cover range is ti become double?

 

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Physics>Modern Physics>Communication System>Antenna
What is an antenna? Find the length of a dipole antenna for a carrier wave of frequency 3×108Hz.
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Physics>Modern Physics>Communication System>Antenna
What is antenna explain its types?
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Physics>Modern Physics>Communication System>Antenna
How does the effective power radiated by an antenna vary with wavelength?
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Physics>Modern Physics>Communication System>Antenna
What is the minimum length of antenna required to transmit a radio signal of frequency 20 MHz. 
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Physics>Modern Physics>Communication System>Antenna
Calculate the length of a half-wave dipole antenna at 100 MHz
 
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Physics>Modern Physics>Communication System>Antenna
The area to be covered for TV telecast is doubled, then height of the antenna (TV tower) will have to be
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Physics>Modern Physics>Communication System>Antenna
A device that makes possible the use of the same antenna for transmission and reception both-
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Physics>Modern Physics>Communication System>Antenna
A 1 KW signal is transmitted using a communication channel which provides attenuation at the rate of – 2dB per km.If the communication channel has a total length of 5 km, the power of the signal received is 
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Physics>Modern Physics>Communication System>Antenna
Which of the following statement is wrong ?
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Physics>Modern Physics>Communication System>Antenna
Why are high frequency carrier waves used for transmission?
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Physics>Modern Physics>Communication System>Antenna
What should be the length of dipole antenna for a carrier wave of frequency of 6×108 Hz?
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Physics>Modern Physics>Communication System>Antenna
The effective power radiated by the antenna is inversely proportional to the square of wavelength.
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Physics>Modern Physics>Communication System>Antenna
What is the working principle of antenna?
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Physics>Modern Physics>Communication System>Antenna

Assertion:  A dish antenna is highly directional.

Reason: This is because a dipole antenna is omnidirectional.

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Physics>Modern Physics>Communication System>Antenna
What should be minimum length of antenna for efficient transmission of signals of wavelength λ ? 
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Physics>Modern Physics>Communication System>Antenna

By what percentage will the transmission range of a TV tower be affected when the height of the tower is increased by 21%.

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Physics>Modern Physics>Communication System>Antenna
How does the effective power radiated by an antenna vary with wavelength?
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Physics>Modern Physics>Communication System>Antenna

A TV tower is 80 m tall. Calculate the maximum distance upto which the signal transmitted from the tower can be received.

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Physics>Modern Physics>Communication System>Antenna
For good transmission high frequency transmission is required.