Answer to Question #137686 in General Chemistry for hudson

Question

What is the frequency of a photon with a wavelength of 159 nm. Report your answers to three significant digits.

Answer 1

the frequency of a photon with a wavelength, λ = 159 nm

= 159×10^-9 m

Let, frequency of the Photon = v s^-1

Then, velocity of photon (light)

C = λ×v m.s^-1

Or, v = C/λ s^-1

As we know C =3×10⁸ m.S^-1 Or, v = 3×10⁸/159×10^-9

Or, v = 1.88 ×10¹⁵

(3 significant digits)

Hence, the frequency of the Photon = 1.88 ×10¹⁵ S^-1