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Ultraviolet light of wavelength 2271Å fr...

Ultraviolet light of wavelength `2271Å` from a 100W mercury source irradiates a photocell made of molybdenum metal. If the stopping potential is 1.3V, estimate the work function of the metal. How would the photocell respond to a high intensity `(~10^(5)Wm^(-2))` red light of wave length `6328Å` produced by a He-Ne laser?

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PHYSICS GALAXY - ASHISH ARORA-PHOTOELECTRIC EFFECT AND MATTER WAVES-Unsolved numerical problems
  1. Ultraviolet light of wavelength 2271Å from a 100W mercury source irrad...

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  2. Light from balmer series of hydrogen is able to eject photoelectron fr...

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  3. A photocell is operating in saturation mode with a photocurrent 4.8 mA...

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  4. Photo electrons are liberated by ultraviolet light of wavelength 3000 ...

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  5. Lithium has a work function of 2.3eV. It is exposed to light of wavele...

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  6. A parallel beam of monochromatic light of wavelength 663 nm is incide...

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

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  8. The work functin of aluminium is 4.2 eV. Calcualte the Kinetic energy ...

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  9. What potential difference must be applied to stop the fastest photoele...

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  10. A sphere of radius 1.00 cm is placed in the path of a parallel beam of...

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  11. Find the frequency of light which ejects electrons from a metal surfac...

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  12. state whether the following statements are TRUE or FALSE, giving reaso...

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  13. A point istropic light source of power P = 12 watt is located on the a...

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  14. A uniform monochromatic beam of light of wavelength 365xx10^(-9)m and ...

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  15. Light of wavelength 180 nm ejects photoelectrons from a plate of met...

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  16. Suppose the wavelength of the incident light is increased from 3000 Å ...

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  17. When a metal plate is exposed to a monochromatic beam of light of wave...

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  18. The energy needed to detach the electron of a hydrogen like ion in gro...

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  19. A stationary hydrogen atom emits a photon corresponding to first line ...

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  20. In an experiment tungsten cathode which has a threshold wavelength 230...

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  21. Electrons with maximum kinetic energy 3eV are ejected from a metla sur...

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