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Maximum speed of electron emitted from m...

Maximum speed of electron emitted from metal surface is `5xx10^(6 )ms^(-1)` .If specifi charge of electron is `1.8xx10^(11) ckg^(-1)`,then value of stopping potential will be…..

A

2V

B

3V

C

7V

D

4V

Text Solution

Verified by Experts

The correct Answer is:
C
`(1)/(2)mv_(max)^(2)=eV_(0)`
`V_(0)=(mv_(max)^(2))/(2e)`
`(v_(max)^(2))/(2(e//m))`
`((5xx10^(6))^(2))/(2xx1.8xx10^(11))`
`=6.95V~~7.0V`
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KUMAR PRAKASHAN-DUAL NATURE OF RADIATION AND MATTER-Section-D (multiple choice questions (MCQs)
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  2. When monochromatic source is kept at distance of 0.2 m from photocell,...

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

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

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

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

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  7. Slope of V(0)toV graph shows…..

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  8. Slope of V(0)etoV represent……

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

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

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

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

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

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

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

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

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

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  18. For photo senstive surface A and B graph of stopping potential versus ...

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  19. In given graph if V(02)gtV(01) then…….

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  20. Graph shown in figure is the relation between photo current (i) versus...

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