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In order to increase the kinetic energy ...

In order to increase the kinetic energy of ejected photoelectrons, there should be an increase in

A

I

B

`lambda`

C

`upsilon`

D

both `lambda` and I

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The correct Answer is:
C
NA
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CP SINGH-PHOTOELECTRIC EFFECT-EXERCISES
  1. In an experiment on photoelectric effect light of wavelength 400 nm is...

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  2. If Planck's constant is denoted by h and the charge by e, experiments ...

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  3. In order to increase the kinetic energy of ejected photoelectrons, the...

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  4. In photoelectric emission the number of electrons ejected per second i...

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  5. When monochromatic radiation of intensity I falls on a metal surface, ...

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  6. Light of frequeny 1.5 times the threshold frequency , imcident on a ph...

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  7. If the wavelength of light in an experiment on photoelectric effect is...

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  8. When ultraviolet radiation is incident on a surface, no photoelectrons...

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  9. A non-monochromatic light is used in an experiment on photoelectric ef...

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  10. When the intensity of a light source is increased

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  11. The photocurrent in an experiment on photoelectric effect increases if

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  12. A point source of light is used in a photoelectric effect. If the sour...

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  13. A phot of energy h upsilon is absorbed by a free electron of a metal h...

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  14. Photoelectric effect supports quantum nature of light because (a) th...

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  15. If the frequency of light in a photoelectric experiment is doubled the...

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  16. Two identical metal plates show photoelectric effect by a light of wav...

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

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

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

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

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