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Nothing, as the speed of sound doesn't change (about 340 metres per second in air). If the frequency (or pitch) were to be twice as high it would simply halve the wavelength.

Q: If the wave frequency is doubled what will happened to the speed?

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IF a wave moving at a constant speed were to have it's wavelength doubled (Wavelength x 2), then the frequency of the wave would be half of what it originally was (Frequency / 2).

Wavelength is halved.

The wave length would necessarily be one half. The speed would remain the same independent of the frequency.

The frequency also doubles of the wave length stays the same. Remember that Velocity = (the wavelength) x (the frequency)

Wavelength = 1/frequency. If you double the frequency, the wavelength drops to half.

Related questions

If the frequency is doubled, the wavelength is halved. This is because the speed of the wave remains constant, as determined by the medium it is traveling through. The wavelength and frequency of a wave are inversely related according to the equation: speed = frequency x wavelength.

If the amplitude of a wave is doubled while the frequency remains constant, the speed of the wave will not change. The speed of a wave is determined by the medium through which it is traveling, not by its amplitude or frequency.

If the frequency of a wave traveling in a rope is doubled, the speed of the wave will remain the same. The speed of a wave in a medium is determined by the properties of the medium, not by the frequency of the wave.

When the frequency of a wave is doubled, the wavelength is halved. This is because the speed of a wave is constant in a given medium, so an increase in frequency results in a decrease in wavelength to maintain a constant speed.

IF a wave moving at a constant speed were to have it's wavelength doubled (Wavelength x 2), then the frequency of the wave would be half of what it originally was (Frequency / 2).

The speed halves.

If the frequency of a wave is doubled while the wave speed remains constant, the wavelength of the wave will be halved. This is because wavelength and frequency are inversely proportional in a wave, so when one doubles, the other is halved to keep the wave speed constant.

speed = freq. X wavelength Hence frequency and wavelength are inversely related when the speed is same. So if the frequency is doubled, then wavelength becomes half of the initial length.

The speed halves.

If the frequency is doubled, the wavelength of the wave will be halved. This is because the speed of the wave remains constant, so as frequency increases, the wavelength decreases to maintain that constant speed.

Wavelength is halved.

The wave length would necessarily be one half. The speed would remain the same independent of the frequency.