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In an experiment on photoelectric effect...

In an experiment on photoelectric effect, the slope of the cut off voltage versus frequency of incident light is found to be `4.12xx10^(-15)Vs`. Given `e=1.6xx10^(-19)C`, estimate the value of Planck's constant.

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Given, slope of graph `= 4.12xx10^(-15)Vs` , Slope of graph `=h//e`
h=e x slope of graph `=1.6xx10^(-19)xx4.12xx10^(-15)=6.592xx10^(-34)Js`
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PRADEEP-DUAL NATURE OF RADIATION AND MATTER-Exercise
  1. In an experiment on photoelectric effect, the slope of the cut off vol...

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  2. The photoelectric effect can be explained on the basis of

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  3. Which of the following has minimum stopping potential?

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  4. When radiation is incident on a photoelectron emitter, the potential i...

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  5. Two photons, each of energy 2.5 eV are simultaneously incident on the ...

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  6. The maximum velocity of an electron emitted by light of wavelength lam...

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  7. The photoelectric work function for a metal surface is 4.125 eV. The c...

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  8. The slope of frequency of incident light and stopping potential for a ...

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  9. Threshold wavelength for a metal having work function w(0) is lambda. ...

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  10. The work function for metals A , B and C are respectively 1.92 eV , 2....

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  11. The wavelength of the matter wave is independent of

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  12. If E(1), E(2), E(3), E(4) are the respective kinetic energies of elect...

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  13. What is de-Broglie wavelength assciated with electron moving under a ...

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  14. The minimum energy required by an electron to..........form the metal ...

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  15. The maximum kinetic energy of emitted photoelectrons depends on the......

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  16. The ratio of number of photoelectrons ejected to the number of the pho...

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  17. For given photosenstive material, the photoelectric current is...........

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  18. An increase in the frequency of the incident light.............the vel...

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  19. The minimum energy required to ejected an electron from the surface of...

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  20. In photoelectric effect the energy of the free electron does not depen...

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  21. Photon is not a..........but it is a.......... .

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