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a) Calculate the wavelength of x ray emitted when 35-keV electron collies with on molybdenum target. b)...

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Physics

a) Calculate the wavelength of x ray emitted when 35-keVelectron collies with on molybdenum target.

b) A single electron orbiting a hydrogen nucleus moves fromenergy level E4 to E2.Calculate the energy in joules of the photon emitted due to thisenergy change.

c)As an electron orbits the nucleus, it can be thought of as astanding wave. Calculate the frequency of the wave if the electronis in the 4th energy level of hydrogen atom

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