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Consider the spectral line resulting fro...

Consider the spectral line resulting from the transition `n =2 rarr n =1` in the atoms and ions given below. The shortest wavelength is produced by `:`

A

hydrogen atom

B

deuterium atom

C

singly ionized helium

D

doubly ionized lithium

Text Solution

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The correct Answer is:
D
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MOTION-MODERN PHYSICS -1-EXERCISE-2(LEVEL-I)
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  2. In which of the following situations, the heavier of the two particle...

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  3. Consider the spectral line resulting from the transition n =2 rarr n =...

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  4. In an atom, two electrons move around nucleus in circular orbits of ra...

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  5. The electron in hydrogen atom in a sample is in n^(th) excited state, ...

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  6. An electron in hydrogen atom first jumps from second excited state to ...

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  7. In an excited state of hydrogen like atom an electron has total energy...

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  8. If radiation of all wavelengths from ultraviolet to infrared ispassed ...

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  9. In the hydrogen atom, if the reference level of potential energy is as...

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  10. A photon of wavelength 0.1 A is emitted by a helium atom as a conseque...

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  11. An electron collides with a fixed hydrogen atom in its ground state. H...

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  12. A plane light wave of intensity I=0.20Wcm^-2 falls on a plane mirror s...

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  13. A plane wave of intensity I=0.70W cm^(-2) illuminates a sphere with id...

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  14. A particle of mass 3m at rest decays into two particles of masses m an...

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  15. Assuming that the mass of proton is nearly equal to mass of neutron th...

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  16. If 10000 V is applied across an X-ray tube, what will be the ratio of ...

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  17. If the potential difference applied across a Coolidge tube is increase...

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  18. The wavelength of k(alpha) X- rays produced by an X - rays tube is 0....

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  19. The shortest wavelength produced in an X-ray tube operating at 0.5 mil...

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  20. If the radiation of Mo (Z = 42) has a wevelength of 0.71Å, calculate w...

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