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The vapours of Hg absord some electron a...

The vapours of Hg absord some electron accelerated by a potiential diff. of 4.5 volt as a result of which light is emitted . If the full energy of single incident `e^(-)` is supposed to be converted into light emitted by single Hg atom , find the wave no. of the light

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`E=e.V=(hc)/lambdarArrlambda=(hc)/(e.V)=3.63xx10^(6)m^(-1)`
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BANSAL-ATOMIC STRUCTURE-Exercise.3
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  2. The wavelenght of a certain line in the Paschen series in 1093.6 nm ...

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  3. Calculate the Rydberg constant RH if He^+ ions are known to have the ...

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  4. A photon having lambda = 854 Å cause the ionization of a nitrogen atom...

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  5. H-atoms is exposed to electromagnetic radition of 1028Åand gives out ...

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  6. The velocity of electron in a certain bohr orbit of hydrogen bears t...

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  7. A doubly ionised lithium atom is hydrogen like with atomic number Z=3 ...

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  8. Estimate the difference in energy between the first and second Bohr'...

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  9. 1.8 g hydrogen atoms are excited to raditions . They study of spectra...

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  10. If the average life time of an excited state of H atom is of order 10^...

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  11. Calculate the binding energy per mole when threshold wavelength of pho...

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  12. A potential difference of 20kV is applied across an X-ray tube. Find t...

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  13. What is de-Broglie wavelength of a He-atom in a container at room temp...

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  14. A portons is accelrated to one -tenth of the velocity of light . If it...

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  15. To what effective potential a proton beam be subjected to give its pro...

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  16. He atom can be excited to 1s^(1)2p^(1)"by"lambda=58.44 nm If lowest...

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  17. The quantum yield for decomposition of HI id 0.2 .In an experiment ...

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  18. Calculate the wavelength of the radiation that would cause photo disso...

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  19. The dissociation energy of H(2) is 430.53 kJ mol^(-1), If H(2) is of d...

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  20. X-rays emitted from a copper target and a molybdenum target are found ...

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  21. An energy of 68eV is required to excite a hydrogen like atom from its...

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