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The electron in a hydrogen atom make a t...

The electron in a hydrogen atom make a transition from an excited state to the ground state. Which of the following statement is true ?

A

Its kinetic energy increases and its potential and total energies decrease.

B

Its kinetic energy decreases, potential energy increases and its total energy remains the same.

C

Its kinetic and total energies decrease and its potential energy increases.

D

Its kinetic potential and total energies decreases.

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The correct Answer is:
A
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MOTION-MODERN PHYSICS -1-EXERCISE-1
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  3. The electron in a hydrogen atom make a transition from an excited stat...

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  4. An H atom in ground state is moving with initial kinetic energy K .It ...

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  5. An electron collides with a hydrogen atom in its ground state and exci...

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  6. An electron with kinetic energy 5eV is incident on a hydrogen atom in ...

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  7. An electron of energy 11.2 eV undergoes an inelastic collision with a...

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  8. The recoil speed of hydrogen atom after it emits a photon in going fro...

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  9. The recoil speed of a hydrogen atom after it emits a photon is going...

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  10. A neutron moving with speed a makes a heat on collision with a hydroge...

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  11. A hydrogen atom is in 5^("in") excited state. When the electron jumps ...

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  12. In a characteristic X-ray spectra of some atom superimposed on continu...

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  13. Which of the following wavelenght falls in X-rays region?

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  14. The penetration power of X-ray increases with the increases in its:

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  15. If the frequency of K(alpha), K(beta) and L(alpha) , X-ray lines of a...

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  16. In X-ray tube , when the accelerating voltage V is halved, the differe...

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  17. The voltage applied to an X-ray tube is 18 kV. The maximum mass of pho...

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  18. The wavelength of K(alpha) X-rays of two metals A and B are 4 // 1875 ...

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  19. The element which has a K(alpha) X-rays line of wavelength 1.8 Å is ...

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  20. The energy of a tungsten atom with a vacancy in L small is 11.3 KaV. W...

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