How fast must a hydrogen atom move to have the same momentum as a 632.8 nm photon? - DUAL NATURE OF MATTER AND RADIATION Quiz | GKFix.in

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Question

How fast must a hydrogen atom move to have the same momentum as a 632.8 nm photon?

A. 0.42 m/s
B. 0.63 m/s
C. 0.81 m/s
D. 1.0 m/s

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