Answer:
The wavelength of radio waves is 2.85 m.
(B) is correct option.
Explanation:
Given that,
Frequency = 105 MHz
We need to calculate the wavelength of radio waves
Using formula of wave velocity
[tex]v = f\times \lambda[/tex]
[tex]\lambda=\dfrac{v}{f}[/tex]
Where, v = wave speed
f = frequency
[tex]\lambda[/tex] = wavelength
Put the value into the formula
[tex]\lambda=\dfrac{3\times10^{8}}{105\times10^{6}}[/tex]
[tex]\lambda=2.85\ m[/tex]
Hence, The wavelength of radio waves is 2.85 m.
