Find the energy in a quantum of light that has a frequency of 1.7E14Hz
Energy= 1.1E-19J
Find the wavelength of a photon of light with energy 2.04eV in meters (1eV= 1.6E-19J)
HINT: must convert eV (USING DIMENSIONAL ANALYSIS) –> Joules, than can solve use E=hc/w
Wavelength= 6.10E-7m
An electron in n=1 in an atom of hydrogen jumps to the n=3 state. What energy in eV is needed to make the transition? ADDED: calculation wavelength and frequency
Change in E= 1.93E-18J, –> convert using DIMENSIONAL ANALYSIS –> eV= 12.1eV;
Wavelength = 1.03E-7m
Frequency= 2.91E15Hz
An electron in an excited hydrogen atom falls from n=5 to n=4. Find the wavelength in meters and frequency of the light produced.
HINT: Must calculate E first (E=4.88E-20J), then plug into E=hc/w
Wavelength = 4.07E-6m
Frequency = 7.37E13Hz
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