Question

What is the frequency of ultraviolet light with a wavelength of 126 nm?

a) 2.38 Hz
b) 238 Hz
c) 23.8 Hz
d) 2.38x10¹⁶ Hz

Answer 1

The frequency of ultraviolet light with a wavelength of 126 nm is 2.38 x 10^15 Hz.

Step-by-step explanation:

To find the frequency of ultraviolet light with a wavelength of 126 nm, we can use the formula:

Frequency = Speed of Light / Wavelength

First, we need to convert the wavelength from nm to m:

126 nm = 126 x 10-9 m

Using the given value for the speed of light (approximately 3 x 108 m/s), we can calculate the frequency:

Frequency = (3 x 108 m/s) / (126 x 10-9 m)

Simplifying the expression gives us:

Frequency = 2.38 x 1015 Hz