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Work function of ……is the lowest....

Work function of ……is the lowest.

A

caesium

B

platinum

C

nickel

D

copper

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The correct Answer is:
A
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KUMAR PRAKASHAN-DUAL NATURE OF RADIATION AND MATTER-Section-D (MCQs asked in AIIMS)
  1. If particle mentioned below moves with same velocity which will have h...

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  2. Work function of metal is 1.6 eV for which maximum wavelength photoele...

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  3. The K.E. of photoelecttron emitted from a metal are K(1) and K(2) ,whe...

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  4. A particle of mass m kg and charge q coulomb is accelerated through V ...

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  5. When a strong electric field of approximately ……is applied on the meta...

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  6. If kinetic energy of emitted electron is made double then its de-Brogl...

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  7. Threshold wavelength for lithium metal is 6250 Å wavelength of inciden...

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  8. Object of 100 g mass moves with velocity of 36 km/hr .de-Broglie wavel...

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  9. The wavelength of de-Broglie wave associated with a neutron of mass m ...

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  10. Photons of energy 1 eV and 2.5 eV sucesseively illuminate a metal,whos...

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  11. To change de-Broglie wavelength from 0.5xx10^(10)m to 1xx10^(-10)m its...

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  12. The threshold wavelength of Na element is 6800 Å.Its work function is ...

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  13. In discharge tube with increase in number density of gas intensity of ...

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  14. In davision -Germer experiment electron emitted from filament is accel...

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  15. Wavelength of photon having 35 keV energy will be……..(h=6.625xx10^(-34...

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  16. Uncertainty in position of electron is 10^(-10) m. uncertainty in its ...

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  17. If energy of photon of 6000 Å is 3.2xx10^(-19) J then energy of photon...

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  18. Work function of ……is the lowest.

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  19. By applying electric field of the order of………..Vm^-1 to a metal, elect...

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  20. Monochromatic light of frequency 6 times 10^14 Hz is produced by laser...

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