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A photon of energy 12.09 eV is absorbed by an electron in ground state of a hydrogen atoms. What will be the energy level of electron ? The energy of

Monjur Alahi

A photon of energy 12.09 eV is absorbed by an electron in ground state of a hydrogen atoms. What will be the energy level of electron ? The energy of electron in the ground state of hydrogen atom is `-13.6 eV`


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Salim Ahmed Kawsar

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Correct Answer - n=3

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Which of the followings can excite a hydrogen atom in ground state? (i) A photon having 11 eV energy (ii) A neutron having `11 eV` kinetic energy (iii

Correct Answer - An electron having `11 eV` kinetic energy.

2 Answers 2 views
A light photon of wavelength `lambda_(0)` is absorbed by an atom of mass m at rest in ground state. The atom is free to move. The atom after absorbing

Correct Answer - `lambda_(0) = (2h)/(sqrt(2mk) + (k)/(c))`

2 Answers 7 views
A hydrogen atom in ground state is moving with a kinetic energy of 30 eV. It collides with a deuterium atom in ground state at rest. The hydrogen atom

Correct Answer - `20 eV, 13.2 eV`

2 Answers 1 views
An excited `.^(69)Zoverset(*)n` Nucleus at rest decays to ground state `.^(69)Zn` by way of emitting a gamma photon. The energy equivalent of differen

Correct Answer - 1.5eV

2 Answers 2 views
A diatomic molecule moving at a speed u absorbs a photon of wavelenght `lambda` and then dissociates into two identical atoms. One of the atoms is fou

Correct Answer - `BE=(hc)/(lambda)-(1)/(2)Mu^(2)-(1)/(2)Mv^(2)`

2 Answers 1 views
(a) The rest mass energy of an electron is `m_(0)c^(2)=0.51MeV`. Can a photon of this energy create an electron in free space? (A) A single photon of

Correct Answer - (a) No (b) `m_(0)=(h^(2)v^(2))/(2c^(2)[hv-2m_(0)c^(2)])`

2 Answers 1 views
A hydrogen atom in ground state absorbs a photon of ultraviolet radiation of wavelength `50 nm` Assuming that the entire photon energy is taken up by

Correct Answer - `[11.2eV]`

2 Answers 1 views
Whenever a photon is emitted by hydrogen in balmer series it is followed by another in lyman series what wavelength does this latter photon correspond

Correct Answer - `[1224 Å]`

2 Answers 1 views
Calculate the energy of hydrogen atom in the ground state given that the after Bohr orbit og hydrogen is `5xx10^(-11)m` and electronic charge is `1.6x

Correct Answer - `-2.304xx10^(-18) J`

2 Answers 1 views
The minimum kinetic energy of a ground state hydrogen atom required to have head-on collision with another ground state hydrogen atom but at rest to p

Correct Answer - 20.4 eV

2 Answers 2 views

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