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Manipal MET2018PhysicsDual Nature of Matter

The stopping potential for photoelectric emission from a metal surface is plotted along Y -axis and frequency v of incident light along X -axis. A straight line is obtained as shown. Planck's constant is given by

Options

  1. Aslope of the line
  2. Bproduct of slope of the line and charge on the electron
  3. Cintercept along Y -axis divided by charge on the electron
  4. Dproduct of intercept along X -axis and mass of the electron

Correct answer

B. product of slope of the line and charge on the electron

Step-by-step solution

Einstein's equation is V= h e - h ₀ e Here, slope of line = h e h= Planck's constant = slope e

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