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QJEEM20Ph03b5: JEE Main 2020 Physics - Class 12 JEEM20Ph03b5 Solution: In a photoelectric effect experiment, the graph of stopping…

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 : JEE Main 2020 (Online) 4th September Evening Slot Physics - Dual Nature of Radiation Question 124 English

Multiple Choice Options

  • A Slope of the straight line get more steep
  • B Graph does not change
  • C Straight line shifts to left
  • D Straight line shifts to right

Step-by-Step Verified Solution

eV = hcλ−ϕ{{hc} \over \lambda } - \phi

⇒\Rightarrow V = (hce)1λ−ϕe\left( {{{hc} \over e}} \right){1 \over \lambda } - {\phi \over e}

Slope of the line in above equation and all other terms are independent of intensity. The graph does not change.

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