Do radios and televisions receive electromagnetic waves at the same speed?

Television uses electrical analog signals, while radio uses electromagnetic waves. The speed of electromagnetic waves is naturally faster than the speed of radio waves. That's it.

Both use electromagnetic waves,But the reproduction process of the two is different,The radio can directly use electromagnetic waves to reproduce the sound,But the TV has to reproduce the sound through the analog function and**,There is more processing process,Naturally slower。

There could be several reasons for this:

The radio signal arrives first: the radio signal is directly transmitted by the radio station without relay, and the TV signal is transmitted by the city's television station and then sent to the households, so it is slow.

In fact, all electromagnetic waves travel at the speed of light in the same medium.

It's just that it's almost the same as the 4th floor.

Now after the use of digital technology, through the satellite relay are digital signals (equivalent to the first kind of compression), cable television stations to receive satellite programs and restore them to analog tones, and then modulate to high-frequency radio waves, transmit or transmit to thousands of households through coaxial cables.

It's not as simple as saying which is long and which is short. The frequency range of the 5th channel of the TV and the FM radio range of the radio overlap and overlap, because the frequency range of the FM radio is 88 108MHz, the bandwidth of the TV broadcast is 8MHz, and the accompanying audio rate of the 5th channel is exactly within this range, so some FM radios can listen to the accompaniment of the program of the 5th channel of the TV. Channels above Channel 6 of the Trembling TV broadcast are well beyond the maximum frequency range of the radio.

However, the frequency range of TV's Channel 1 and 4 has not exceeded the frequency of FM radio broadcasts. The short and medium waves of radio, on the other hand, are much lower than the frequency range of television broadcasting.

Therefore, the wavelength of the short wave in the radio should be longer than the wavelength of the television based on the wavelength of the television, the wavelength of the TV channel 1 4 is longer than the wavelength of the radio FM broadcast, the wavelength of the TV channel 5 is similar to the wavelength of the radio FM broadcast, and the wavelength of the TV channel 6 or more is much shorter than the wavelength of the radio.

Radio electromagnetic waves are longer.

It's all written on the panel scale of the radio, and the advanced machine is still digitally displayed.

medium wave 535 1605kHz;

one (or more segments) of the shortwave in the 2 26MHz range;

The FM wave is at 87 108MHz.

Radios can only use antennas to receive electromagnetic waves, but cannot emit electromagnetic waves; And the radio can receive a variety of electromagnetic waves, and the radio tune is to adjust the frequency of the electromagnetic group car wave by adjusting what it is connected to, so that its own frequency is consistent with the received electromagnetic wave, so as to achieve resonance, so as to select the required electromagnetic wave so a correct

So choose A