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JEE Main20204 Sep 2020Evening ShiftPhysicsDual Nature of MatterActual

In a photoelectric effect experiment, the graph of stopping potential V versus reciprocal of wavelength obtained is shown in the figure. As the intensity of incident radiation is increased :

Options

  1. AStraight line shifts to right
  2. BSlope of the straight line get more steep
  3. CStraight line shifts to left
  4. DGraph does not change

Correct answer

D. Graph does not change

Step-by-step solution

Einstein's photoelectric equation is given by, eV s = h ν - W o , where W o is the work function. ⇒ V s = h c eλ - W o e , where c = ν λ . Intensity does not affect the frequency and work function of a material. Therefore, the graph does not change with increasing intensity.

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