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Thomson's Discovery of Electrons

38. A station...

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38. A stationary ${H e}^{+}$ ion emitted a photon corresponding to the first line of H of Lyman series. The photon liberated photoelectron from a stationary H atom in the ground state. What is the velocity of electron.

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Q. A stationary

{H e}^{+}

ion emitted a photon corresponding to a first line of the Lyman series. The photon liberated a photoelectrons from a stationary

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atom in ground state. What is the velocity of photoelectrons?

Q. A stationary

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(R_{H} = 109678 c m^{- 1})

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