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A light source of wavelength lambda illu...

A light source of wavelength `lambda` illuminates a metal and ejects photoelectron with `(KE)^(max) = 1 eV.`
Another light source of wave length `(lambda)/(3),` ejects
photoelectrons from same metal with `(KE)^(max)=5 eV.`
Find the value of work function (eV) of metal.

A

1 eV

B

2 eV

C

`0.5` eV

D

None of these

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A
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NARENDRA AWASTHI-ATOMIC STUCTURE-Exercise
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  2. If lamdao and lamda be the threshold wavelength and wavelength of inci...

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  3. A light source of wavelength lambda illuminates a metal and ejects pho...

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  4. Electronmagnetic radiations having lambda=310Åare subjected to a metal...

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  5. The ratio of slopes of K(max) vs. V and V(0) vs. v curves in the photo...

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  6. Radiation corresponding to the transition n=4 to n=2 in hydrogen atoms...

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  7. Select the incorrect statement.

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  8. Which is the de-Broglie equation?

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  9. Which of the following has the largest de Broglie wavelength (all have...

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  10. The de-Broglie wavelength associated with a particle of mass 10^-6 kg ...

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  11. For two particles A and B, curves are plotted sqrtV against de-Broglie...

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  12. Which of following graphs correctly represents the variation of partic...

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  13. An excited state of H atom emits a photon of wavelength lamda and retu...

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  14. A dye absorbs a photon of wavelength lambda and re- emits the same ene...

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  15. Be^(3+) and a proton are accelerated by the same potential, their de-...

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  16. de Broglie wavelength of an electron after being accelerated by a pote...

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  17. An electron travels with a velocity of x ms^(-1). For a proton to have...

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  18. The momentum ("in" kg-m//s) of photon having 6 MeV energy is :

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  19. The number of photons of light having wave number 'x' in 10 J of energ...

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  20. Which of the following relates to photons both as wave motion and as a...

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