Atomic Physics Theory MCQ - Multiple Choice Question and Answer

Atomic Physics Theory MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 1
The mass of an electron in motion depends upon:

direction of motion

its velocity

its velocity of e^-

it's shell number

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Question No : 2
The mass and energy equivalent to 1 a.m.u. respectively are :

1.67 x 10^-27 g, 9.30 MeV

1.67 x 10^-27 kg, 930 MeV

1.67 x 10^-27 kg, 1 MeV

1.67 x 10^-34 kg, 1 MeV

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Question No : 3
It is given for the azimuthal quantum number l = 3, the total number of different possible values of the magnetic azimuthal quantum number, m_l is :

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Question No : 4
The acceleration of electron in the first orbit of hydrogen atom is:

\frac{4 π^{2} m}{h^{3}}

\frac{h^{2}}{4 π^{2} mr}

\frac{h^{2}}{4 π^{2} m^{2} r^{3}}

\frac{m^{2} h^{2}}{4 π^{2} r^{3}}

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Question No : 5
If the electron in a hydrogen atom jumps from an orbit level n₁ = 3 to an orbit level n₂ = 2, the emitted radiation has a wavelength given by :