We’re being asked to calculate the wavelength being emitted by an orange light with an energy of 3.13 x 10-19 J.
Recall that the energy of a photon (E) is given by:
h = Planck’s constant (6.626 × 10–34 J • s)
v = frequency (in s–1)
Also, recall that the frequency (v) and wavelength (λ) are related:
c = speed of light (3.0 × 108 m/s)
A photon of orange light has energy of 3.13 x 10-19 J. What is its wavelength?
A. 700 nm
B. 635 nm
C. 590 nm
D. 562 nm
E. 494 nm