Question

frequency when wavelength is 0.85m

Answer 1

HEY.........
HERE IS UR ANSWER........

SPEED OF SOUND = WAVELENGTH × FREQUENCY

THEREFORE, FREQUENCY = SPEED OF SOUND (at 20 degree) / WAVELENGTH

FREQUENCY = 344/0.85 = 404.705 Hz

HOPE U UNDERSTAND BRO

Answer 2

The frequency of a wave is $3.52\times 10^8\ Hz$.

Explanation:

It is given that the wavelength of a wave is 0.85 m. We need to find the frequency of a wave. We know that the relation between frequency, wavelength and the speed of a wave is given by :

$c=f\lambda\\\\f=\dfrac{c}{\lambda}\\\\f=\dfrac{3\times 10^8}{0.85}\\\\f=3.52\times 10^8\ Hz$

So, the frequency of a wave is $3.52\times 10^8\ Hz$

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Frequency when wavelength is 0.85 m  ?

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