To find the frequency of light given its wavelength, you can use the equation:
speed of light = wavelength x frequency
The speed of light is approximately 3 x 10^8 meters per second (m/s).
First, convert the given wavelength from nanometers (nm) to meters (m):
6.5 x 10^-7 nm = 6.5 x 10^-7 x 10^-9 m = 6.5 x 10^-16 m
Now, rearrange the equation and solve for frequency:
frequency = speed of light / wavelength
frequency = 3 x 10^8 m/s / (6.5 x 10^-16 m)
frequency ≈ 4.62 x 10^23 Hz
Therefore, the frequency of light with a wavelength of 6.5 x 10^-7 nm is approximately 4.62 x 10^23 Hz.