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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

its kinetic energy increase but potential energy and total energy decrease

B

kinetic energy, potential energy and total energy decrease

C

Kinetic energy decrease, potential energy increases but total enrgy remian same

D

kinetic energy and total energy decrease but potential energy increases

Text Solution

Verified by Experts

The correct Answer is:
A
`KE prop ((Z)/(n))^(2)`
an `n` decreases `KE` increases and `TE, PE` decreases
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RESONANCE ENGLISH-ATOMIC PHYSICS-Exercise -3 part -I JEE (Advanced)
  1. In a hydrogen like atom electron makes transition from an energy level...

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  2. Hydrogen (.(1)H^(1)), Deuterium (.(1)H^(2)), singly ionised Helium (...

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

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  4. Ultraviolet light is incident on two photosensitive materials having w...

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  5. Mention the significance of Davisson-Germer experiment. An alpha-parti...

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  6. De Broglie wavelength associated with an electron acclerated through a...

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  7. A hydrogen atom initially in the ground level absorbs a photon, which ...

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  8. Plot a graph showing the variation of stopping potential with the freq...

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  9. Draw a schematic diagram of the experiment used by. Davisson and Germe...

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  10. The two lines A and B in fig. shows the plot of de- Broglie wavelength...

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  11. Fig. shows the variation of stopping potential V0 with the frequency v...

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  12. The ground state energy of hydrogen atom is -13.6 eV. (i) What is...

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  13. The stopping potential in an experiment on photoelectric effect is 1.5...

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  14. Define ionisation energy . What is its value for a hydrogen atom ?

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  15. Write Einstein's photoelectric equation . State clearly the three sali...

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  16. Derive an expression for the magnetic moment (vec mu) of an electron r...

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  17. Define the term 'stopping potential' in relation to photoelectric effe...

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  18. (a) Using de Broglie's hypothesis, explain with the help of a suitable...

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  19. A proton and an electron have same kinetic energy. Which on has smalle...

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  20. Using Einstein's photoelectric equation show how the cut -off voltage ...

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