A waveform travels in space at a rate of approximately 300 million meters per se
ID: 3760560 • Letter: A
Question
A waveform travels in space at a rate of approximately 300 million meters per
second. The wavelength of a sine wave is the actual distance in space that is used
by one sine wave as it travels. What is the wavelength of a 100-MHz sine wave?
What is the wavelength of a 500-MHz sine wave? Antennas to send and receive
electromagnetic waves are often sized to be one-half of the wavelength for the
particular wave being used. Compare your previous calculations to the size of
VHF and UHF television antennas. How large would a 1/2 wavelength antenna
have to be to transmit a 60-Hz wave?
Explanation / Answer
wavelength of 100-MHz sine wave is 3 meters.half wavelength is 1.5m length
wavelength of 500-MHz sine wave is 0.6 meters.half wavelength is 0.3 m length
for a 60 HZ wave we require an antenna of 5 x106meters so the half wavelength is 2.5 x 106 meters length or
2500 KM