Question

Say that you have two laser pointers which each have the same power output. One pointer...

Say that you have two laser pointers which each have the same power output. One pointer

produces green light, and one produces red light. If you produce a pulse of light by turning the

lasers on for 2.0 s,

and then off,

(a) which color of laser produces the pulse with larger energy?

(a) which color of laser produces the

pulse with the larger momentum?

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Answer #1

Concept - both the energy and momentum of a light pulse are inversely proportional to the wavelength of the light. Since green has smaller wavelength, it will have larger energy and momentum as shown below.***********************************************************************************************
This concludes the answers. If there is any mistake or omission, let me know immediately and I will fix it....

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