Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Main 202529 JanuaryEvening Shift
Exam
JEE Main
Year
2025
Date
29 January
Shift
Evening Shift
Subject
Physics
Chapter
Dual Nature of Matter

JEE Main 2025 · 29 January · Evening Shift · Physics · Dual Nature of Matter

In an experiment with photoelectric effect, the stopping potential,

In an experiment with photoelectric effect, the stopping potential,

Options

  1. Aincreases with increase in the intensity of the incident light
  2. Bdecreases with increase in the intensity of the incident light
  3. Cincreases with increase in the wavelength of the incident light
  4. Dis (1e)\left(\frac{1}{\mathrm{e}}\right) times the maximum kinetic energy of the emitted photoelectrons

Correct answer

D. is (1e)\left(\frac{1}{\mathrm{e}}\right) times the maximum kinetic energy of the emitted photoelectrons

Step-by-step solution

From Einstein photoelectric equation hcλ=ϕ+eVS\frac{h c}{\lambda}=\phi+e V_S Maximum K.E. =(K)max⁡=eVs=(\mathrm{K})_{\max }=e V s So, VS=(K)max⁡eV_S=\frac{(\mathrm{K})_{\max }}{e}
Practice Dual Nature of Matter on Quantrex Academy →

More from Dual Nature of Matter

K_1 and K_2 be the maximum kinetic energies of photoelectrons emitted from a surface of a… JEE Main 2026The de Broglie wavelength for an electron accelerated through the potential difference of… JEE Main 2026Given below are two statements: one is labelled as Assertion (A) and the other is… JEE Main 2026An electron is travelling with a velocity v in free space and when it enters a medium… JEE Main 2026An electron of mass m is moving in an electric field E = -2E_0 i ( E_0 = constant > 0 )… JEE Main 2026Light source having wavelength 331 nm is used to generate photo-electrons whose stopping… JEE Main 2026Match the LIST-I with LIST-II List-I List-II A. Planck's constant I. ML^2T^ -2 B.… JEE Main 2026The de Broglie wavelength associated with an electron accelerated through a potential… JEE Main 2026 Full Dual Nature of Matter list All JEE Main PYQs