Question

A particular radio station broadcasts at a frequency of 1120 kilohertz. Another radio station broadcasts at a frequency of 98.7 megahertz. What are the wavelengths of the radiations from each station?

Answer 1

Relation between velocity (v), wavelength (λ) and frequency(f) is:

λ = v/f

Let the velocity be the speed of light i.e. 3×10^8m/s

For radio station with f= 1120 kHz,

λ = 3×10^8 / 1120 x 10^3

= 3/112 x 10^4

= 267.86 m

For radio station with f= 98.7 MHz,

λ = 3×10^8 / 98.7 x 10^6

= 3/98.7 x 10^4

= 3.04 m

So, Wavelengths of radiations are 267.86m and 3.04m respectively

Answer 2

Answer:

Explanation:

Relation between velocity (v), wavelength (λ) and frequency(f) is:

λ = v/f

Let the velocity be the speed of light i.e. 3×10^8m/s

For radio station with f= 1120 kHz,

λ = 3×10^8 / 1120 x 10^3

= 3/112 x 10^4

= 267.86 m

For radio station with f= 98.7 MHz,

λ = 3×10^8 / 98.7 x 10^6

= 3/98.7 x 10^4

= 3.04 m

So, Wavelengths of radiations are 267.86m and 3.04m respectively

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