What’s the frequency (in mega hertz) of a beam of red light whose wavelength is 6000 A

Question

50,000 MHz
500,000 MHz
5,000,000 MHz
50,000,000 MHz
500,000,000 MHz

Answer 1

To find the frequency of a beam of light, we can use the equation:

Frequency = Speed of Light / Wavelength

The speed of light is approximately equal to 3 x 10^8 meters per second.

First, we need to convert the wavelength from Angstroms to meters. Since 1 Angstrom is equal to 10^-10 meters, the wavelength of 6000 A is equal to 6000 x 10^-10 meters.

Now, we can calculate the frequency:

Frequency = (3 x 10^8 meters per second) / (6000 x 10^-10 meters)
Frequency = 5 x 10^13 Hz

Converting Hz to MHz, we divide the frequency by 10^6:

Frequency in MHz = (5 x 10^13 Hz) / (10^6)
Frequency in MHz = 50,000 MHz

Therefore, the frequency of the beam of red light with a wavelength of 6000 A is 50,000 MHz.