Question

What is the frequency of the EM wave with a wavelength of 12 cm?

Answer 1

We know that velocity of the sound is given by,

v=(frequency)*(Wavelength)

so we know that

velocity of the sound is= 3*10^8 (m/s)

and given is the wavelength= 12 cm= 0.12m

so, putting all the given values in the equation,

$3*10^8 = n*(0.12)\\n=(3*10^8)/0.12\\n=25*10^8 hz$

therefore, frequency of the EM wave would be

2.5GHz