Question

Which equation should be used to calculate the speed of a wave?
speed = frequency x wavelength
speed = frequency x hertz
speed = period x wavelength
speed = period x hertz

Answer 1

Answer : The correct option is,

Speed = Frequency x Wavelength

Explanation :

Wave speed : It is defined as the speed at which a wave travels.

It is related to wavelength, frequency, and period.

The equations used are:

Speed = Frequency x Wavelength     ............(1)

As we know that,

$\text{Frequency}=\frac{1}{\text{Period}}$

So,

$\text{Speed}=\frac{1}{\text{Period}}\times \text{Wavelength}$   .......(2)

The equation 1 and 2 are used to calculate the speed of wave.

Answer 2

The equation that should be used to calculate the speed of a wave is: speed = frequency x wavelength.

WHAT IS SPEED:

• Speed of a wave refers to how fast it moves at a certain frequency and wavelength.

• This means that the speed of a wave (m/s) is the product of the frequency of the wave (Hz) and the wavelength (m)

Therefore, the equation that should be used to calculate the speed of a wave (m/s) is: speed = frequency x wavelength.

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