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In photoelectric effect experiment, show the variation of (a) photocurrent with collector plate potential for a given surface for different intensities of incident radiation. Do the curves meet at any point ? If so, why ? (b) photocurrent with intensity of radiation incident on a surface keeping the frequency and plate potential fixed.
How would the stopping potential for a given photosensitive surface change if (i) the frequency of the incident radiation were increased ? and (ii) the intensity of incident radiation were decreased ? Justify your answer.
Plot suitable graphs to show the variation of photoelectric current with the collector plate potential for the incident radiation of (i) the same intensity but different frequencies ν₁, ν₂ and ν₃ (ν₁ < ν₂ < ν₃) (ii) the same frequency but different intensities I₁, I₂ and I₃ (I₁ < I₂ < I₃)
The work function of a metal is 2.31 eV. Photoelectric emission occurs when light of frequency 6.4 × 10¹⁴ Hz is incident on the metal surface. Calculate : (i) the energy of the incident radiation, (ii) the maximum kinetic energy of the emitted electron and (iii) the stopping potential of the surface.
The figure shows the variation of stopping potential V₀ with frequency v of incident radiation, for three materials M₁, M₂ and M₃ with work functions φ₁, φ₂ and φ₃ respectively. Then :
Which of the following cannot be observed by an increase in the intensity of light alone?
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