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The photoelectric work function for a me...

The photoelectric work function for a metal surface is `4.125 eV`. The cut - off wavelength for this surface is

A

`4125Å`

B

`2062.5Å`

C

`3000Å`

D

`6000Å`

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The correct Answer is:
c
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PRADEEP-DUAL NATURE OF RADIATION AND MATTER-Exercise
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  2. The maximum velocity of an electron emitted by light of wavelength lam...

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

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

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

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

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

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

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

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

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

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  17. Photon is not a..........but it is a.......... .

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  18. The velocity of photons different media is............. .

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  19. The intensity of light depends upon the.........present in light.

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  20. The momentum of a photon of energy E is............and of wavelength l...

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