The wavelength of light visible to the human eye is in the order of 5 *10-7 m. If the speed of light in air is 3 *108 m/s, find the frequency of the lightwave.
A)3 * 107 Hz
B)4 * 109 Hz
C)5 * 1011 Hz
D)6 *1014 Hz
E)4 *1015 Hz

Question

Quizplus · Accepted Answer

The formula relating frequency, speed, and wavelength of light is:
frequency = speed/wavelength
Substituting the given values, we get:
frequency = (3 x 10^8 m/s) / (5 x 10^-7 m)
= 6 x 10^14 Hz
Therefore, the frequency of the lightwave is 6 x 10^14 Hz, which is closest to option D, 6 x 10^14 Hz.

The Wavelength of Light Visible to the Human Eye Is