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Which one of the following statements is NOT true about photoelectric emission ?

A

For a given emitter illuminated by light of a given frequency, the number of photo-electrons emitted per second is proportional to the intensity of incident light.

B

For every emitter there is a definite threshold frequency below which no photoelectrons are emitted, no matter what the intensity of light is

C

Above the threshold frequency, the maximum kinetic energy of photo electrons is proportional to the frequency of incident light

D

The saturation value of the photoelectric current is independent of the intensity of incident light

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PHYSICS GALAXY - ASHISH ARORA-PHOTOELECTRIC EFFECT AND MATTER WAVES-Conceptual MCQ
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  2. In photoelectric effect when photons of energy hv fall on a photosensi...

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  3. Photoelectric emission occurs only when the incident light has more th...

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

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  5. At frequencies of the incident radiation above the threshold frequency...

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  6. A metallic surface has a threshold wavelength 5200 A. This surfece is ...

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  7. Let p and E denote the linear momentum and energy of a photon. If the ...

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  8. The equation E=pc is valid

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  9. Let (nr) and (nb) be respectively the number of photons emitted by a r...

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  10. The photoelectrons emitted from a metal surface:

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  11. The graph between, which of the following two factors for photoelectri...

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  12. When ultraviolet light is incident on a photocell, its stopping potent...

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  13. The slope of the stopping potential versus frequency graph for photoel...

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

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  15. Which one of the following statements is NOT true about photoelectric ...

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  16. Blue light can cause photo electric emission from a metal, but yellow ...

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

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  18. Photoelectrons are being obtained by irradiating zinc by a radiation o...

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  19. Which one of the following graphs in figure shows the variation of pho...

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  20. When monochromatic light falls on a photosensitive material, the numbe...

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