Class 12PhysicsDual Nature of Radiation and MatterPhotoelectric Effect by Lenard and it's Observations
EasyIn a photoelectric experiment,if both the intensity and frequency of the incident light are doubled,then the saturation photoelectric current
- Ais halved
- Bis doubled
- Cbecomes four times
- Dremains constant
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In the photoelectric effect,electrons are emitted from a metal surface only when the incident light has a certain minimum . . . . . . .
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View SolutionExplain Hertz's observation in short.
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View SolutionThe graph given in the figure shows the variation of photocurrent $(I)$ with the applied voltage $(V)$ for two different materials and for two different intensities of incident radiation. Which of the following pairs of curves represent the same material?
Explain the effect of variation of intensity of incident radiation on photoelectric current.
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View SolutionThe work function of aluminium is $4.2 \ eV$. If two photons, each of energy $3.5 \ eV$, strike an electron of aluminium, then the emission of electrons will be:
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