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Ligth of wavelength 4000 Å is incident o...

Ligth of wavelength `4000 Å` is incident on a metal plate whose work function is `2 eV`. What is maximum kinetic enegy of emitted photoelectron ?

A

0.5 eV

B

1.1 eV

C

1.5 eV

D

2.0 eV

Text Solution

Verified by Experts

The correct Answer is:
B
As maximum `KE=(hc)/(lamda)-phi_(0)`
`=(6.6xx10^(-34)xx3xx10^(8))/(4000xx10^(-10))xx(1)/(1.6xx10^(-19))-2=1.1eV`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTRONS AND PROTONS-Exercise 1
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  3. Ligth of wavelength 4000 Å is incident on a metal plate whose work fun...

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

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

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

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

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

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

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

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

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

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

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

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

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

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  20. The energy of a photon corresponding to the visible light of maximum w...

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