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3 years ago

A wave travels at a constant speed. How does the frequency change if the wavelength increases by a factor of 2?

Physics

2 answers:

Kay [80]3 years ago

8 0

A.The Frequency decreases by a factor of 2.

NARA [144]3 years ago

3 0

Answer : The frequency decreases by a factor of 2.

Explanation :

Given that the wave travels at a constant speed. The speed of the wave is given as :

$v=\nu\times \lambda$

Where

υ is the frequency of the wave

and λ is the wavelength of the wave.

In this case, the speed is constant. So, the relation between the frequency and the wavelength is inverse.

$\nu\propto \dfrac{1}{\lambda}$

If the wavelength increases by a factor of 2, its frequency will decrease by a factor of 2.

Hence, the correct option is (A) " The frequency decreases by a factor of 2 ".

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2 years ago

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Answer:

η = 40 %

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