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  4. The magnitude of energy, the magnitude of linear momentuin and orbital radius of an electron in a hydrogen atom corresponding to the quantum number n are E, P and r respectively. Then according to Bohr's theory of hydrogen atom :

Q. The magnitude of energy, the magnitude of linear momentuin and orbital radius of an electron in a hydrogen atom corresponding to the quantum number are and respectively. Then according to Bohr's theory of hydrogen atom :

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Solution:

Energy of electron in orbit is

Momentum of electron in orbit is

where is given as

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4. Muon is a negatively charged particle with a mass me, where me is the mass of the electron and e is the electronic charge. If - is bound to a proton to form a hydrogen like atom, identify the correct statements.
(A) Radius of the muonic orbit is times smaller than that of the electron.
(B) The speed of the in the orbit is times that of the electron in the orbit.
(C) The ionization energy of muonic atom is times more than that of an hydrogen atom.
(D) The momentum of the muon in the orbit is times more than that of the electron.

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5. The ratio of the wavelengths for transition in and is

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