An atom in its ground state absorbs a single photon of light and then relaxes back to the ground state by emitting an infrared photon (1,200 nm) followed by an orange photon (600 nm). What is the wavelength of the photon that was absorbed initially?
A)600 nm
B)1,200 nm
C)1,800 nm
D)900 nm
E)400 nm

Question

An atom in its ground state absorbs a single photon of light and then relaxes back to the ground state by emitting an infrared photon (1,200 nm) followed by an orange photon (600 nm). What is the wavelength of the photon that was absorbed initially? 
A)600 nm 
B)1,200 nm 
C)1,800 nm 
D)900 nm 
E)400 nm

Quizplus · Accepted Answer

The Answer of An atom in its ground state absorbs a single photon of light and then relaxes back to the ground state by emitting an infrared photon (1,200 nm) followed by an orange photon (600 nm). What is the wavelength of the photon that was absorbed initially? 
A)600 nm 
B)1,200 nm 
C)1,800 nm 
D)900 nm 
E)400 nm

An Atom in Its Ground State Absorbs a Single Photon