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3 years ago

A wave is passing through a uniform medium. As the frequency of this wave increases, its wavelength

Physics

2 answers:

pashok25 [27]3 years ago

7 0

<h2>Answer: decreases</h2>

The speed $v$ of a wave is given by the following formula:

$v=f.\lambda$ (1)

Where:

$f$ the frequency of the wave

$\lambda$ the wavelength

But, we want to know<u> its wavelength</u>, hence we have to rewrite equation (1):

$\lambda=\frac{v}{f}$ (2)

If we are told the wave is passing through a uniform medium, this means <u>its velocity is constant</u> in this medium.

So, keeping this in mind, from (2) we are able to know that $\lambda$ is inversely proportional to $f$ .

What does this mean?

If $f$ increases $\lambda$ decreases

and

If $f$ decreases $\lambda$ increases

Therefore the correct option is b:

<h2>As the frequency of this wave increases, its wavelength <u>decreases</u>.</h2><h2 />

Lerok [7]3 years ago

5 0

B. Decreases

Why: Because the longer the wavelength the lower the frquency. The shorter the wavelength the higher the frequency.

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