Wavelength changes but not frequency
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Wavelength changes but not frequency

[From: ] [author: ] [Date: 12-02-16] [Hit: ]
so for light wavelength is inversely porportional to frequency. But, that is a special case-wavelength is inversely proportional to frequency ONLY when velocity is CONSTANT........
In sound, for eg. when waves are in liquid speed increases than in air. So the wavelength of wave is more in liquid whereas there's no effect on frequency(due to which the speed increases v=frq x wvlnth). but this contradicts the fact that wavelength is inversely proportional to frequency.

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Wavelength is inversely proportional to frequency according to this formula:

speed/frequency = wavelength.

That is they act inversely proportional to each other only when the speed is constant.

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When sound travels from one medium to another, the variables r the speed n wavelength. But frequency had no effect since it is source dependent. Like when I tap the take 3 times per sec, the wave will remain as 3 hz frequency n there will only be 3 waves per sec regardless of the medium it's travelling in. however, the speed varies due to density of the medium or how closely the particles are packed. Wavelength is dependant on the speed since f is constant. Rmb that f n wavelength r inversely proportional only if speed is constant.

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Velocity = wavelength * frequency

If you can change velocity, then either or both frequency and wavelength can change.

In the case of electromagnetic radiation (light) velocity cannot change, so for light wavelength is inversely porportional to frequency. But, that is a special case

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wavelength is inversely proportional to frequency ONLY when velocity is CONSTANT..
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