Question

what is the use of light source in photoelectric effect?

Answer 1

Light source resembles a black body, e.g. it emits radiation in the widespectral range also in the regions of visible or ultraviolet light, which are important in the case of the photoelectric effect. For example a light bulb can be used. In some experiments the intensity of the light source is adjustable.

Answer 2

Light acts as a black body, it emits the radiation in the range of wide spectral.



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