An FM station broadcasts music at 93.5 MHz (megahertz, or 10⁶ Hz). Find the wavelength (in m, nm, and Å) of these waves.

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Answer:

The wavelength in m = 3.208 m

The wavelength in nm =[tex]3.208\times 10^9 nm[/tex]

The wavelength in Å = [tex]3.208\times 10^{10} \AA[/tex]

Explanation:

To calculate the wavelength of light, we use the equation:

[tex]\lambda=\frac{c}{\nu}[/tex]

where,

[tex]\lambda[/tex] = wavelength of the radiation

c = speed of light = [tex]3.0\times 10^8m/s[/tex]

[tex]\nu[/tex] = frequency of wave

We have :

Frequency of the wave = [tex]\nu =93.5MHz=93.5\times 10^6 Hz[/tex]

[tex]1 Hz = 1s^{-1}[/tex]

Wavelength of the wave = [tex]\lambda [/tex]

[tex]\lambda =\frac{c}{\nu}[/tex]

[tex]\lambda=\frac{3\times 10^8 m/s}{93.5\times 10^6 s^{-1}}=3.208 m[/tex]

[tex]1 m = 10^9 nm[/tex]

[tex]3.208 m= 3.208\times 10^9 nm[/tex]

[tex]1 m = 10^{10} \AA[/tex]

[tex]3.2086 m= 3.208\times 10^{10} \AA[/tex]

The wavelength in m = 3.208 m

The wavelength in nm =[tex]3.208\times 10^9 nm[/tex]

The wavelength in Å = [tex]3.208\times 10^{10} \AA[/tex]

The wavelength in m = 3.208 m

The wavelength in nm = [tex]3.208*10^9 nm[/tex]

The wavelength in Å = [tex]3.208*10^{10}[/tex] Å

What is Wavelength?

It is equal to the speed (v) of a wave train in a medium divided by its frequency (f). It is given by:

[tex]\lambda=\frac{c}{f}[/tex]

where,

[tex]\lambda[/tex] = wavelength of the radiation

c = speed of light = [tex]3.0*10^8m/s[/tex]

f = frequency of wave = 93.5 MHz = [tex]93.5*10^6Hz[/tex]

Calculation of wavelength:

[tex]\lambda=\frac{c}{f}\\\\\lambda=\frac{3.0*10^8m/s}{93.5*10^6s^{-1}} \\\\\lambda=3.208m=3.208*10^9nm=3.208*10^{10}[/tex]Å.

Thus, The value for wavelength in different units are:

The wavelength in m = 3.208 m

The wavelength in nm = [tex]3.208*10^9 nm[/tex]

The wavelength in Å = [tex]3.208*10^{10}[/tex] Å

Find more information about Wavelength here:

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