Q. A monochromatic radiation of wavelength is incident on a sample containing . As a result the Helium sample starts radiating. A part of this radiation is allowed to pass through a sample of atomic hydrogen gas in ground state. It is noticed that the hydrogen sample has started emitting electrons whose maximum Kinetic Energy is . (he ) Then is :

Atoms Report Error

A

B

C

D

Solution:

Maximum energy of radiation incident on -sample of electron this energy corresponds to the transition
in Helium
For electrons of the He to get excited to

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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.
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(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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