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When a monochromatic point source of lig...

When a monochromatic point source of light is at a distance of 0.2 m from a photoelectric cell,the cut-off voltage and saturation current are respectively 0.6 V and 18.0 mA.If the same source is placed 0.6 m away from the photocell,then

A

the stopping potential will be 0.2 V

B

the stopping potential will be 0.6 V

C

the saturation current will be 2.0 mA

D

the saturation current will be 6.0 mA.

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MODERN PUBLICATION-UNIT TEST -07-EXERCISE
  1. Photoelectrons are being obtained by irradiating zinc by a radiation o...

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  2. Ultraviolet radiaiton of 6.2 eV falls on an aluminium surface(work fun...

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  3. When a monochromatic point source of light is at a distance of 0.2 m f...

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  4. The figrue shows the variation of photocurrent with anode potential fo...

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  5. The graph between 1 //lambda and stopping potential (V) of three metal...

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  6. The energy of a photon is equal to the kinetic energy of a proton.The...

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  7. A particle of mass M at rest decays into two particles of masses m1 an...

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  8. A beam of electrons is used in an Young's double slit experiment.The s...

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  9. Electrons with de-Broglie waveelngth lambda fall on the target in an X...

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  10. Electron volt is a unit of

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  11. When a proton is accelerated with IV potential difference, then its ki...

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  12. Unit of Planck constant is :

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  13. Which one of the following statements about photon is incorrect?

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  14. A photon behaves as if it had a mass equal to

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  15. The minimum light intensity that can be perceived by the eye is about ...

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  16. Photoelectrons are emitted,when

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  17. When ultraviolet rays are incident on a metal plate,the photoelectric ...

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  18. If the distance of 100 W lamp is increased from a photo cell,the satur...

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  19. A photocell is illuminated by a small bright source placed 1 m away .w...

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  20. Consider light of given intensity and frequency falling on a substance...

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