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Statement-1 : Between any two given ener...

Statement-1 : Between any two given energy levels, the number of abosrption transitionsis always less than the number of emission transitions.
and
Statement-2 : Absorption transitions starts from the lowest energy level only and may end at any higher energy level. But emission transitions may start from any higher energy level and end at any energy level below it.

A

Both 'A' and 'R' are true and 'R' is the correct explanation of 'A'.

B

Both 'A' and 'R' are true and 'R' is not the correct explanation of 'A'

C

'A' is true and 'R' is false

D

'A' is false and 'R' is true

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The correct Answer is:
A
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Assertion (A), Between any two given energy levels, the number of absorption transition is always less than number of emission transition. Reason (R ): Absorption transitiion start from the lowest energy lovely only and may end at any higher energy level. but emission transition may start from any higher energy level and end at any energy level below it.

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AAKASH SERIES-ATOMS-EXERCISE -IB
  1. Name the material used for heating element of a room heater.

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  2. (A) for the scattering of alpha- particles at large angles, only the n...

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  3. Statement-1 : Between any two given energy levels, the number of abosr...

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  4. Balmer series lies in which region of electromagnetic spectrum

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  5. (A) bohr's postulate states that the electrons, in stationary orbits a...

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  6. (A) electrons int the atom are held due to coulomb forces. (R) the a...

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  7. In Bohr model of the hydrogen atom, let R,v and E represent the radiu...

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  8. The lines in Balmer series have their wavelengths lying between

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  9. Assertion: Magnetic force between two short magnets, when they are co-...

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  10. The energy of a photon of wavelength lambda is

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  11. (A) bohr model can not be extended to two or more electron atoms. (R...

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  12. (A) large angle of scattering of alpha particles led to the discovery ...

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  13. (A) the trajetory traced by an incident particle depends on the impact...

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  14. Thickness of the foil of gold used in alpha-particle scattering experi...

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  15. In scattering experiment, find the distance of closest approach, if a ...

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  16. According the classical theory of Rutherford's model, the path of elel...

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  17. When an electron of the hydrogen atom jumps from a higher to lower en...

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  18. (A) hydrogen atom consists of only one electron but its emission spect...

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  19. (A) for the scattering of alpha- particles at large angles, only the n...

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  20. Statement-1 : Between any two given energy levels, the number of abosr...

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