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The collector plate in an experiment on ...

The collector plate in an experiment on photoelectric effect is kept vertically above the emitter plate . Light source is put on and a saturation photo current is recorded . An electric field is switched on which has a vertically downward direction . Then

A

the photocurrent will increase

B

the K.E. of the electrons will increase

C

the stopping potential will decrease

D

the threshold wavelength will increase

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The correct Answer is:
B
Electric force on electrons will increase velocity
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CP SINGH-PHOTOELECTRIC EFFECT-EXERCISES
  1. A point source causes photoelectric effect from a small metal plate. W...

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

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

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

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

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

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

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

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

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

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

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

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

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  14. A proton and an electron are accelerated by the same potential differe...

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  15. In which of the following cases the heavier of the two particles has a...

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  16. If the kinetic energy of the particle is increased to 16 times its pre...

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  17. The de - Broglie wavelength of a neutron at 27 ^(@) C is lambda. What ...

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  18. lambda(e),lambda(p) and lambda(alpha) are the de-Broglie wavelength of...

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  19. When the mkomentum of a proton is changed by an amount p(0), the corre...

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  20. If an electron and a photon propagate in the form of waves having the...

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