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How does one explain the emission of ele...

How does one explain the emission of electrons from a photosenstive surface with the help of Einstein's equation?

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According to Einstein's photoelectric equation the maximum KE of emitted photoelectron is `K_(max)=1/2 mv_(max)^2=h(v-v_0)`
If the frequency of incident light `vgtv_0`, then `K_(max)` is negative, no photoelectric emission takes place.
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Photoelectric effect is a phenomenon of emission of electrons from the surfaces of a metal when the light of suitable frequency falls on it. If light of frequency v falls on a photosenstive surface of work function phi_(0) , then the maximum kinetic energy of photoelectron emitted is given by Einstein's photoelectric equation. (KE)_(max)=1/2mv_(max)^(2)=hv-phi_(0) The value (KE)_(max) will increases if the energy of the incident light (hv) increases of work function (phi_(0)) is decreased. Read above passage and answer the following questions: (i) Why can visible light not ejected photoelectrons from every surface? (ii) Light of frequency 7.21xx10^(14)Hz is incident on a metal surface. Electrons with a maximum speed of 6.0xx10^(5)ms^(-1) are ejected from the surface. What is the threshold frequency for photo emission of electrons? h=6.6xx10^(-34)Js, m_(e)=9.1xx10^(-31)kg . (iii) What do you learn basically from the above study?

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PRADEEP-DUAL NATURE OF RADIATION AND MATTER-Exercise
  1. How does one explain the emission of electrons from a photosenstive su...

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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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