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The work function of a surface of a pho...

The work function of a surface of a photosensitive material is `6.2 eV`. The wavelength of the incident radiation for which the stopping potential is `5 V` lies in the

A

X - ray region

B

Ultraviolet region

C

Visible region

D

Infrared region

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NARAYNA-DUAL NATURE OF RADIATION AND MATTER-EXERCISE - 3
  1. A 5 W source emits monochromatic light of wavelength 5000 Å. When plac...

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

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  3. The work function of a surface of a photosensitive material is 6.2 eV...

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

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  5. The number of photoelectrons emitted for light of a frequency v (highe...

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

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  7. The figure shows a plot of photo current versus anode potential for a ...

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  8. A 0.66 kg ball is moving wih a speed of 100 m//s. The associated wavel...

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  9. When monochromatic radiation of intensity I falls on a metal surface, ...

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  10. The potential difference that must be applied to stop the fastest phot...

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

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

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  13. The threshold frequency for a certain metal is 3.3xx10^(14) Hz. If lig...

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  14. Electrons used in an electron microscope are accelerated by a voltage ...

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

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  16. Lights of two different frequencies whose photons have energies 1 and ...

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

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  18. If the momentum of an electron is changed by p, then the de - Broglie ...

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

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  20. If velocity of a particle is 3 times of that of electron and ratio of ...

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