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In two different experiment X-rays are i...

In two different experiment X-rays are incident on sodium metal and then X-rays are incident on copper.In both case stoppin potential `V_(0)` is measured ,stopping potential …given
`[(phi_(0))_(na)lt(phi_(0))_(cu)]`

A

will be same in both case

B

will be more for sodium metal

C

more for copper

D

will be infinite for both metal

Text Solution

Verified by Experts

The correct Answer is:
B
`eV_(0)=hf-phi`
`phi_(Na)ltphi_(cu)`
`therefore V_(0NA)gtV_(0cu)`
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KUMAR PRAKASHAN-DUAL NATURE OF RADIATION AND MATTER-Section-D (multiple choice questions (MCQs)
  1. For metals cesium ,potassium ,sodium and lithium graph of stopping pot...

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  2. Maximum kinetic energy of photoelectron emitted is independent of ……

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  3. In two different experiment X-rays are incident on sodium metal and th...

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  4. Ultraviolet radiation in incident on sodium metal.Then visible light i...

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  5. When monochromatic source is kept at distance of 0.2 m from photocell,...

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  6. Maximum speed of electron emitted from metal surface is 5xx10^(6 )ms^(...

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  7. The work function of a metal surface is 4.2 eV. The maximum wavelength...

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  8. Threshold frequency for metal surface is 4xx10^(14) Hz.When radiation ...

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  9. On metal surface radiation of 2000Å and 5000 Å is incident sequentiall...

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  10. Slope of V(0)toV graph shows…..

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  11. Slope of V(0)etoV represent……

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  12. ……potentail on collector w.r.t. emitter for which photo-electric curre...

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  13. In condition of stopping potential value of photo-electric current wil...

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  14. Value of stopping potential depends on……. Of incident light.

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  15. When metal surface with 2.1 eV work function is irridated with photon ...

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  16. When photon of v frequency os incident on photo sensitive surface with...

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  17. ……..cannot be explained by wave theory of light.

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  18. Photo-electric effect show …….nature of radiation.

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  19. Which of the following has same dimension as that of planck's constant...

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  20. Figure shows graph of stopping potential v frequency in experiment of ...

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