A light beam has a frequency of 5 x 1015 Hz. What is its wavelength?
To find the wavelength of a light beam, you can use the formula:
wavelength = speed of light / frequency
The speed of light in a vacuum is approximately 3 * 10^8 meters per second.
Given the frequency of the light beam as 5 * 10^15 Hz, we can substitute these values into the formula:
wavelength = (3 * 10^8 m/s) / (5 * 10^15 Hz)
To simplify the calculation, we can express the given frequency in scientific notation as well:
wavelength = (3 * 10^8 m/s) / (5 * 10^15 Hz)
= (3 / 5) * (10^8 / 10^15) m
= (3 / 5) * (10^8-15) m
= (3 / 5) * 10^-7 m
= 6 * 10^-8 m
Therefore, the wavelength of the light beam is 6 * 10^-8 meters.