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The photoelectric threshould wavelength ...

The photoelectric threshould wavelength for a metal surface is 6600 Å. The work function for this is

A

0.87 eV

B

1.87 eV

C

18.7 eV

D

0.18 eV

Text Solution

Verified by Experts

The correct Answer is:
B
As, `phi_(0)+(hc)/(elamda_(0))("in eV")`
`=(6.6xx10^(-34)xx3xx10^(8))/(6600xx10^(-10)xx1.6xx10^(-19))=1.87eV`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTRONS AND PROTONS-Exercise 1
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  2. Millikan's oil drop experiment established that

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  3. The photoelectric threshould wavelength for a metal surface is 6600 Å....

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  4. Ligth of wavelength 4000 Å is incident on a metal plate whose work fun...

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  5. The frequency of incident light falling on a photosensitive metal plat...

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  6. If the work function for a certain metal is 3.2 xx 10^(-19) joule and ...

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  7. Ultraviolet light of wavelength 300nn and intensity 1.0Wm^-2 falls on ...

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  8. Light of wavelength 4000 Å is incident on a sodium surface for which t...

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  9. Photoelectric emission occurs only when the incident light has more th...

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  10. A photosensitive metallic surface has work funtion hv(0). If photons o...

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  11. Radiation two photons having energies twice and five times the work fu...

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  12. The work function for metals A , B and C are respectively 1.92 eV , 2....

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  13. Silver has a work function of 4.7 eV. When ultraviolet light of wavele...

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

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  15. A photosensitive metallic surface has work funtion hv(0). If photons o...

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  16. A metal surface of work function 1.07 eV is irradiated with light of w...

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  17. represents a graph of most energetic photoelectrons K(max)(in eV) and ...

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  18. Find the difference of kinetic energies of photoelectrons emitted from...

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  19. When ultraviolet light of wavelength 100 nm is incident upon silver pl...

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  20. Light of wavelength lamda strikes a photoelectric surface and electron...

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