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Could someone please help me with this question,,I have no idea how to work it out and have looked through my text book/notes and arrrr still can't do it...

A beam of photons encounters a double slit that has a separation distance d = 34.0 μm. Note: the diagram is not drawn to scale...(the diagram just shows a slit with a detector array 'x' meters away)

a)...if a single photon in the beam has an energy of 16.81x10^-19J what is it's energy in eV?

I calculated that to be 10.5eV but then its the next one I cant do as I have no other info. besides seperation distance and energy!!!

b) What is it's wavelength?

???????

Any help would be much appreciated

Thank you

physics_06er

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# Homework Help: Double Slit question

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