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Define the terms : Threshold frequency...

Define the terms :
Threshold frequency

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Threshold frequency is the minimum frequency of the incident radiation below which photo emission cannot take place in the substance.
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SUBHASH PUBLICATION-DUAL NATURE OF RADIATION AND MATTER-NUMERICALS WITH SOLUTIONS
  1. Define the terms : Threshold frequency

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  2. A photo has a wavelength of 5000 Å. Calculate its momentum.

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  3. Calculate de Broglie wave length of an object of mass 10 kg hurled wit...

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  4. The wave length of a photon is 5000 Å. Calculate its energy in electro...

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  5. Calculate the frequency of light photon of energy 2.24 eV.

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  6. Light of wavelength 2000 Å can just eject electrons from a metal surfa...

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  7. Calculate the longest wavelength of incident light on platinum for whi...

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  8. The photo electric threshold for a metal surface is 5800 Å. Calculate ...

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  9. Calculate the retarding potential required to stop the photoelectrons ...

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  10. The work function of copper is 4.57 eV. If radiation of 2500 Å is inci...

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  11. A certain sodium lamp radiates 400 W of yellow light of wave length 58...

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  12. Calculate the velocity of the photoelectrons emitted when a light of f...

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  13. Ultraviolet radiations of wavelengths 800 Å and 700 Å when allowed to ...

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  14. A photon of frequency 1.5xx10^(15) Hz is incident on a metal surface o...

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  15. Find the (a) maximum frequency and (b) minimum wavelength of X- rays p...

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  16. The photo electric cut off voltage in a certain experiment is 1.5V. Wh...

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  17. In an experiment on photo electric effect, the slope of cut - off volt...

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  18. The energy flux of sunlight reaching the surface of Earth is 1.388 xx1...

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  19. Calculate the (1) de Broglie wavelength of electron (2) momentum & (3)...

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  20. An electron and a photon each have a wavelength of 1.00 nm. Find (i) ...

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  21. (a) For what K.E. of a neutron, will the associated de Broglie wavelen...

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