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Give two examples of particle nature of ...

Give two examples of particle nature of electromangetic radiation.

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(i) When light of a suitable frequency strikes a metal, photoelectrons are ejected from its surface. This phenomenon (of photoelectric effect) supports the particle nature of electromagnetic radiation.
(ii) The phenomenon of black body radiation also supports particle nature of electromagnetic radiation.
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CHHAYA PUBLICATION-STRUCTURE OF ATOM-WARM UP EXERCISE
  1. An electron beam after hitting a nickel crystal produces a diffraction...

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  2. Mention the property of electromagnetic radiation (wave nature or part...

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  3. Give two examples of particle nature of electromangetic radiation.

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  4. What type of spectrum will be obtained if the electron of H-atom appro...

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  5. Name the series of spectral lines observed I the visible regionn of hy...

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  6. Indicate spectral regions corresponding to Lyman, Balmer, Paschen & br...

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  7. Which electronic transitionn corresponds to the third line in the Balm...

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  8. Name the five series in the atomic spectrum of hydrogen.

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  9. Why is the line spectrum of an element known as the fingerprint of its...

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  10. how would you obtain the line spectrum of hydrogen?

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  11. Give Rydberg formula for the calculation of wave number of various spe...

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  12. Name the series of spectral lines obtained, when electrons from variou...

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  13. Indicate all the possible pathways (involving one or more steps) for t...

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  14. What is ground state and excited state of an electron?

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  15. What is meant by quantisation of energy of an electron?

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  16. What is Bohr's postulated of angular momentum?

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  17. Why electronic energy is negative?

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  18. What do you understand by stationary states?

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  19. What is the value of Plancks' constant in SI unit?

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  20. Differentiate between Rydberg formula & Balmerr formula.

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