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A 200 W infrared laser emits photons with wavelengths of 2.0 x 10-6 m, and a...

A 200 W infrared laser emits photons with wavelengths of 2.0 x 10-6 m, and a 200 W ultraviolet laser emits photons with wavelengths of 7.0 x 10-8 m.  What is the energy of a single photon from each laser – which wavelength of photon has more energy?  Which laser is brighter (emits more photons every second)?  Blackboard question:  If both lasers are turned on at the same time, how many total photons are emitted every second?

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