Question

An electromagnetic wave has a wavelength of 6.2 x 1014 m. What is the frequency of the wave?

O2.0 x 10“ Hz
O 4.8 x 10-7 Hz
O 1.8 x 1024 Hz
O 5.3 x 10-22 Hz

Answer 1

4.8x10-7 Hz

Explanation: 3e8m/s= the speed of light(c). C/6.2e14= 4.8x10-7

Answer 2

`f=4.83 * 10^(-7)Hz`

Step-by-step explanation:

Hello

electromagnetic waves are the waves that do not need a material medium to propagate. They include, among others, visible light and radio, television and telephone waves. They all propagate in a vacuum at a constant, very high speed (300,000 km / s) ,now ,the frequency has an inverse relationship with the concept of wavelength , the higher the frequency, the shorter the wavelength and viceversa. The frequency f is equal to the speed of the wave, divided by the wavelength l

`f=(v)/(l)\\\\\\\1 km= 1000 m\\300000 km/s = 300000000 m/s\\\\f=(300000000 m/s)/(6.2*10^(14)m)\\\\f=4.83 * 10^(-7)s^(-1)\\`

by definition

`s^(-1) = Hz`

`f=4.83 * 10^(-7)Hz`

have a great day