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Calculate the length of half wave dipole...

Calculate the length of half wave dipole antenna at 30 MHz

A

10 m

B

5 m

C

2.5 m

D

20 m

Text Solution

Verified by Experts

The correct Answer is:
B
Length of a dipole antenna `l=lambda/2=c/(2f)`
In this problem , `lambda=c/f =(3xx10^8)/(30xx10^6)` = 10 m
`therefore l=lambda/2=5` m
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Knowledge Check

  • The length of half wave dipole antenna at 50 MHz is

    A
    5 m
    B
    4 m
    C
    3 m
    D
    2 m

  • What should be the length of a half wave dipole antenna required to transmit audio frequency signals?

    A
    a.5 km
    B
    b.10 km
    C
    c.15 m
    D
    d.7.5 km

  • If the frequency of the carrier wave is increased from 10 MHz to 100 MHz, the length of the half wave dipole antenna required for transmission

    A
    a.increases
    B
    b.decreases
    C
    c.remains constant
    D
    d.will be doubled

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