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The work function for Al, K and is 4.28 ...

The work function for Al, K and is 4.28 eV, 2.30 eV and 5.65 eV respectively. Their respective threshold frequencies would be

A

`Pt gt Al gt K`

B

`Al gt Pt gt K`

C

`K gt Al gt Pt`

D

`K+hv`

Text Solution

Verified by Experts

The correct Answer is:
A
Work function, `W_(0)=hv_(0)`
where, `v_(0)=`threshold frequency
so, `omega_(0)=v_(0)`. Hence, `Pt gt Al gt K`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ELECTRONS AND PROTONS-Exercise 1
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  2. represents a graph of most energetic photoelectrons K(max)(in eV) and ...

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

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  7. When a centimeter thick surface is illuminated with light of wavelengt...

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  8. The work function for Al, K and is 4.28 eV, 2.30 eV and 5.65 eV respec...

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  9. When photons of energy hv fall on an aluminium plate (of work function...

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  10. A photocell with a constannt potential differnce of V voolt across it,...

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  11. In a photoemissive cell, with exciting wavelength lambda, the faster e...

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  12. In a photoemissive cell, with exciting wavelength lambda, the faster e...

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  13. The threshold frequency of the metal of the cathode in a photoelectric...

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  14. Calculate the energy of a photon with momentum 3.3xx10^(-13)kg-ms^(-1)...

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  15. The energy that should be added to an electron, to reduce its de-Brogl...

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  16. A parallel beam of light is incident normally on a plane surface absor...

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  17. A particle of mass 1 mg has the same wavelength as an electron moving ...

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  18. Monochromatic light of frequency 6.0 xx 10^(14) Hz is produced by a la...

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  19. Maxwell's equations of electromagnetism and hertz experiments on gener...

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  20. If 5% of the energy supplied to a bulb is irradiated as visible light,...

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