Question

Red light has a wavelength of 700 nm and a frequency of 4.3 x 1014 s-1. What is the energy of a single photon of red light?

Answer 1

A. 2.85 x 10-19 J
B. 2.85 x 10-20 J
C. 2.85 x 10-34 J
D. 2.85 x 1019 J

@abb0t @Abmon98

Answer 2

I believe there is a formula for this, but i cannot remember it right now. Do you know it?

Answer 3

It involves planks constant, and speed of light.

Answer 4

E = h*c/λ

Answer 5

lambda**

Answer 6

Yes, I believe that's it. You know wavelength and frequency. Plug it in and solve. This is not that difficult.

Answer 7

The relationship between velocity, frequency, and wavelength of any wave is: \(\sf \color{Red}{v=f \lambda}\)

Answer 8

just an added FYI.

Answer 9

Can you help me with this one still I'm a little confused what goes where @abb0t