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As an electron makes a transition from a...

As an electron makes a transition from an excited state to the ground state of a hydrogen - like atom/ion :

A

kinetic energy decrease, potential energy increases but total energy remains same

B

kinetic energy and total energy decrease but potential energy increases

C

its kinetic energy increases but potential energy and total energy decreases

D

kinetic energy, potential energy and total energy decrease

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The correct Answer is:
A
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ALLEN-SIMPLE HARMONIC MOTION-Exercise-04 [B]
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  2. A nucleus of mass M+Deltam is at rest and decays into two daughter nuc...

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  3. A nucleus of mass M+Deltam is at rest and decays into two daughter nuc...

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  4. A radioactive nucleus (initial mass number A and atomic number Z) emit...

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  5. The half-life of a radioactive substance is 20 min. The approximate ti...

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  6. After absobing a slowly moving neutron of mass m(N) (mometum ~0), a nu...

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  7. Statements-1 : A nucleus having energy E(1) decays by beta-emission to...

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  8. Assume that a neutron breaks into a proton and an electron. The energy...

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  9. As an electron makes a transition from an excited state to the ground ...

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  10. Match List - I (Fundamental Experiment) with List - II (its conclusion...

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  11. If one were to apply Bohr model to a particle of mass 'm' and charge '...

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  12. De - Broglie wavelength of an electron accelerated by a voltage of 50 ...

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  13. Let N(beta) be the number of beta particle emitted by 1 gram of Na^(24...

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  14. The de-Brogile wavelength associated with electron in the n = 4 level ...

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  15. Half-lives of two radioactive substances A and B are respectively 20 m...

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  16. Radiation of wavelength lambda, is incident on a photocell. The fastes...

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  17. When photons of wavlength lambda(1) are incident on an isolated sphere...

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  18. An electron in a hydrogen atom makes a transition from n = 2 to n = 1 ...

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  19. A neutron moving with a speed v makes a head on collision with a hydro...

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  20. A photoelectric surface is illuminated successively by monochromatic l...

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