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The work function of nickle is 5eV. When...

The work function of nickle is `5eV`. When light of wavelength `2000A^(0)` falls on it, emits photoelectrons in the circuit. The the potential difference necessary to stop the fastest electrons emitted is (given `h=6.67xx10^(-34) Js`)

A

1.0 V

B

1.75 V

C

1.2 V

D

0.75 V

Text Solution

Verified by Experts

The correct Answer is:
3
`V_(0)=(E-omega_(0))/(e)`
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NARAYNA-DUAL NATURE OF RADIATION AND MATTER-EXERCISE - 1 (C.W)
  1. The work function of a metal is 2.5eV. The maximum kinetic energy of t...

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  2. A metal of work function 2.5 eV is irradiated by light. If the emitted...

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  3. The work function of nickle is 5eV. When light of wavelength 2000A^(0)...

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  4. A photocell is illuminated by a small bright source places 1 m away w...

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  5. The threshold wavelength for a surface having a threshold frequency of...

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  6. Two photons of energies twice and thrice the work function of a metal ...

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  7. The momentum of a photon is 33 xx 10^(- 29) kg - m//sec. Its frequency...

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  8. The energy of a photon of wavelength lambda is given by

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  9. The momentum of a photon is 2 xx 10^(-16) gm - cm//sec. Its energy is

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  10. The rest mass of the photon is

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  11. The momentum of the photon of wavelength 5000 Å will be

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  12. The momentum of a photon of energy will be

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  13. A photon in motion has a mass

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  14. If the momentum of a photon is p, then its frequency is

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  15. A particle of mass 5M at rest decays into two particle of masses 2 m a...

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  16. An electron and a photon have same wavelength of 10^(-9) m. If E is th...

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  17. A proton and an alpha-particle are accelerated through same potential ...

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  18. A particle with rest mass m0 is moving with velocity c. what is the d...

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  19. The velocity of a body of mass 10 gm is 2 xx 10^(4) ms^(-1). The value...

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  20. The ratio of wavelength of deutron and proton accelerated through the ...

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