Question

An x-ray has a wavelength

of 2.2 x 10-11 m. What is
the frequency of the x-ray? Help asap please

Answer 1

C

Step-by-step explanation:

For electromagnetic waves frequency X wavelength = speed of light

f * 2.2 x 10^-11 = 3 x 10^8 m/s

f = 3 x 10^8 / 2.2 x 10^-11

= 1.36 x 10 ^19

= 1.4 x 10^19 with two significant digits