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The collector plate in an experiment on ...

The collector plate in an experiment on photo electric effect is kept vertically above the emitter plate. Light source is put on and a saturation photo current is recorded. Parallel electric and magnetic fields are applied vertically downwards between the plates. Then

A

The photo current will increase

B

The K.E. of the photo electron will decrease

C

The stopping potential will increase

D

The threshold wave length increases

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-DUAL NATURE OF RADIATION AND MATTER-EXERCISE-I
  1. If the wave length of light in an experiment on photo electric effect ...

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  2. Photo electric current

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  3. The collector plate in an experiment on photo electric effect is kept ...

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  4. The best photo electric substance is

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  5. Blue light can eject photo electron from a photo sensitive surface whi...

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  6. Intensity of light incident on a photo sensitive surface is doubled. T...

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  7. Light of wavelength lamda falls on a metal having work function hc/ la...

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  8. When orange light falls on a photo sensitive surfaces the photo curren...

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  9. A cathode of a photo electric cell is changed such that the work funct...

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  10. Stopping potential depends on

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  11. The saturation of photoelectric current depends on

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  12. A photo electric cell converts

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  13. Burglar alarm is based on

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  14. Which of the following is based on photo electricity

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  15. Photo electric effect can be explained only by assuming that light

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  16. Consider the two following statements A and B and identify the correct...

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  17. The number of electrons emitted by a surface exposed to light is direc...

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  18. In photoelectric phenomenon, the number of photo electrons emitted dep...

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  19. According to Einstein.s photoelectric equation, the plot of the KE of ...

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  20. A photo cell is illuminated by a small bright source placed lm away. W...

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