Class 12PhysicsDual Nature of Radiation and matterPhotoelectric Effect by Lenard and it's Observations
EasyIn the photoelectric effect,a photocell is used for the conversion of ..........
- AChange in light intensity into change in photoelectric current
- BChange in light intensity into change in work function of the photocathode
- CChange in light frequency into change in electric current
- DChange in light frequency into change in electric voltage
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Assertion $(A) :-$ The photoelectrons produced by a monochromatic light beam incident on a metal surface have a spread in their kinetic energies.
Reason $(R) :-$ The work function of the metal varies as a function of depth from the surface.
Reason $(R) :-$ The work function of the metal varies as a function of depth from the surface.
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View SolutionThe graph shows the variation of photocurrent with anode potential for four different radiations. Let $I_a, I_b, I_c$ and $I_d$ be the intensities and $f_a, f_b, f_c$ and $f_d$ be the frequencies for the curves $a, b, c$ and $d$ respectively,then
The figure shows a plot of photo current versus anode potential for a photo sensitive surface for three different radiations. Which one of the following is a correct statement?
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View SolutionWhich phenomena can be explained by using the particle nature of light?
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View Solution$A$ photoelectric cell is illuminated by a point source of light $1 \ m$ away. When the source is shifted to $2 \ m$,then:
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