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The cathode of a photoelectric cell is c...

The cathode of a photoelectric cell is changed such that the work function changes from `(W_(1) to W_(2) (W_(2) gt W_(1))`. If the current before and after change are `I_(1)` and `I_(2)`, all other conditions remaining unchanged , then (assuming `hv gt W_(2)`)

A

`i_(1) = i_(2)`

B

`i_(1) lt i_(2)`

C

`i_(1) gt i_(2)`

D

`i_(1) lt i_(2) lt2i_(1)`

Text Solution

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The correct Answer is:
A

The current depends on intensity
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CP SINGH-PHOTOELECTRIC EFFECT-EXERCISES
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  2. Two identical metal plates show photoelectric effect by a light of wav...

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  3. The cathode of a photoelectric cell is changed such that the work func...

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  4. The frequency and intensity of a light source are both doubled. Consid...

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  5. The threshold wavelength for photoelectric emission from a material ...

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  6. A photoelectric cell is illuminated by a point source of light 1 m awa...

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  7. If the distance of 100 Watt lamp is increased from a photocell, the sa...

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  8. A point source causes photoelectric effect from a small metal plate. W...

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

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  10. The collector plate in an experiment on photoelectric effect is kept v...

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  11. The electric field associated with a light wave is given by E= E0 sin...

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  12. A beam of light of wavelength lambda is incident on a metal having wor...

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  13. A photon of energy E ejects a photoelectron from a metel surface whose...

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  14. A monochromatic light of wavelength lambda is incident on an isolated ...

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  15. Photoelectric effect experiments are performed using three different m...

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  16. The graph between 1//lambda and stopping potential (V) of three metals...

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

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  18. Which of the following is correct regarding de-Broglie wavelength?

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  19. de-Broglie wavelength associated with an electron accelerated through ...

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  20. An electron of mass me and a proton of mass mp are accelerated through...

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