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The work functions for metals A, B and C are respectively 1.92 eV, 2.0 eV and 5 eV. According to Einstein's equation the metals which will emit photoelectrons for a radiation of wavelength 4100 Å is/are

A

Only A

B

A and B

C

All of these

D

None of these

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B
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MOTION-PHOTOELECTRIC EFFECT -EXERCISE - 3 SECTION -A (Previous Year Problems (NEET ))
  1. The electron in the hydrogen atom jumps from excited state (n=3) to it...

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

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  3. The work functions for metals A, B and C are respectively 1.92 eV, 2....

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  4. Monochromatic light of wavelength 667 nm is produced by a helium neon ...

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  5. Light of two different frequencies whose photons have energies 1eV and...

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  6. In photoelectric emission process from a metal of work function 1.8 eV...

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  7. The threshold frequency for a photosensitive metal is 3.3 xx 10^(14) H...

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  8. An electron in the hydrogen atom jumps from excited state n to the gro...

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  9. Monochromatic radiation emitted when electron on hydrogen atom jumps f...

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  10. A modern 200 W sodium street lamp emits yellow light of wavelength 0.6...

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  11. A alpha -parhticle moves in a circular path of radius 0.83 cm in th...

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  12. An electrons of a stationary hydrogen aton passes form the fifth enegr...

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  13. Threshold frequency of a metal is 5xx10^(13)s^(-1) upon which 1xx10^(1...

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  14. The wavelength lambda(e ) of an electron and lambda(p) of a photon of...

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  15. For photoelectric emission from certain metal the cut - off frequency ...

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  16. When the energy of the incident radiation is increased by 20 % , kinet...

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  17. When a metallic surface is illuminated with radiation of wavelength la...

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  18. An electron of mass m and a photon have same energy E. The ratio of de...

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  19. Photons with energy 5 eV are incident on a cathode C in a photoelectri...

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  20. The photoelectric threshold wavelength of silver is 3250 xx 10^(-10) m...

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