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Which of the metal sodium and copper wil...

Which of the metal sodium and copper will be suitable for photelectric cell using light of wavelength `4000 Å`. The work functions of sodium and copper are respectively 2.0 eV and 4.0 eV. Take `h=6.6 xx 10^(-34) Js, c = 3.0 xx 10^(8) ms^(-1)` and 1 eV = `1.6 xx 10^(-19) J`

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SL ARORA-ELECTRONS AND PHOTONS-TYPE D : Problem For Self Practice
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  2. The work function for a metal surface is 2.0 eV. Determine the longest...

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  3. A metal has a threshold wavelength fo 6000 Å. Calculate (i) threshold ...

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  4. Photoelectric work function for a surface is 2.4 eV. Light of waveleng...

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  5. Calculate the kinetic energy of a photoelectron (in eV) emitted on shi...

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  6. What is the energy of emitted photoelectrons is light of frequency 10^...

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  7. If the speed of photoelectrons is 10^(4) ms^(-1), what should be the f...

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  8. Which of the metal sodium and copper will be suitable for photelectric...

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  9. (a) The work function for the surface of aluminium is 4.2eV. How much ...

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  10. The photoelectric threshold wavelength for lithium is 8000 Å. Find the...

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  11. The wavelength of a photon is 1.4 Å. It collides with an electron. Its...

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  12. The energy of photoelectrons emitted from a sensitive plate is 1.56 eV...

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  13. The mercury line of wavelength 2356 Å is used to eject photoelectrons ...

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  14. The photoelectric threshold wavelength for tungsten is 2400 Å. Determi...

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  15. The cathode of a photocell is irradiated with light of wavelength 3000...

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  16. Find the maximum velocity of photoelectrons emitted by radiation of fr...

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  17. Given that a photon of light of wavelength 10,000Å has an energy equal...

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  18. Ultraviolet light of wavelength 800 A and 700 A when allowed to fall ...

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  19. When light of wavelength 400nm is incident on the cathode of photocell...

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  20. (a) If the wavelength of the light incident on a photoelectric cell be...

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