The following questions deal with the nature of light and color. (Enter your answers using scientific notation.)

Question

a)  A photon has a wavelength of 510. nanometers (nm). What is the length in meters?

b) What is the frequency of this photon? _____ s^-1

c)  What is the energy of this photon? ___J

Answer 1

This question involves you using the following relationships: 1 nm =10^-9 m; ν = c /λ and E = hν

λ is the wavelength; ν is the frequency; h - Planck's constant = 6.63 x 10^-34 J·sec; c - speed of light =3.00 x 10⁸m/sec.

Using this information you should be able to calculate the answer. The only other thing to pay attention to is the significant figures reported. You are given 510. nanometer (nm) which has 3 sig. fig so your answers need to have 3 sig. figs!

Hope this helps!