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How are number of fundamental particles ...

How are number of fundamental particles calculated from atomic and mass numbers ? 

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AAKASH SERIES-ATOMIC STRUCTURE-QUESTIONS FOR DESCRIPTIVE ANSWERS
  1. Calculate their specific charges of fundamental particles.

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  2. How are number of fundamental particles calculated from atomic and mas...

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  3. How are the characteristics of wave inter-related?

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  4. Electromagnetic waves differ from matter waves in many respect. Substa...

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  5. ow energy density in black body radiation depends upon temperature?

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  6. What is the longest wavelength line in Paschen series for hydrogen?

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  7. Define isotopic number. Calculate the isotopic numbers of hydrogen-3 a...

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  8. A bulb emits light of wavelength 4500Å. The bulb is rated as 150 watt ...

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  9. The work function for Cesium atom is 1.9 eV . Calculate the threshold ...

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  10. What is the minimum energy of photons which causes photoelectric effec...

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  11. The energy of the electron in the first Bohr orbit of H is -2.18xx10^(...

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  12. Why the total energy of atomic electron is negative ?

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  13. Calculate the wave number for the longest wavelength transition in the...

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  14. The wavelength of a certain line in Balmer series is 4341 angstroms. T...

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  15. A spectral triplet is obtained for the electronic transition from n = ...

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  16. What transition in the hydrogen emission spectrum have the same wavele...

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  17. Calculate the wave length of an electron moving with a velocity of 2.0...

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  18. The kinetic energy of an electron is 4.55xx10^(-28) kJ. Calculate the ...

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  19. Calculate the product of uncertainties ofdisplacement and velocity of ...

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  20. What isthe maximum number of emission lines observed when the excited ...

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