What is the wave length of a 2-eV red photon? Repeat your calculation for an 0.1-eV infrared photon and a 5000-eV (5-keV) X-ray.

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Atul Chhotray Profile
Atul Chhotray answered
The formula we' ll use is the Einstein's energy equation -

E= h v = hc/L where h is the Planck's constant, c is light wave velocity and L is the wavelength.

1 ev = 1.6 * 10-19 J, c = 3*108For 2ev photon, L = 6.211 * 10-7 m, For X ray, L = 3.9756 * 10-10 m

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