MHT CET202615 April 2026Evening ShiftPhysicsDual Nature of MatterActual
In photoelectric effect experiment, if the frequency of incident radiation ( v ) is increased, keeping all other factors constant, the stopping potential, ( v > v₀ ) ( v₀ = threshold frequency)
Options
- Adecreases
- Bremains the same
- Cincreases
- Dbecomes zero
Correct answer
C. increases
Step-by-step solution
According to Einstein's photoelectric equation, the maximum kinetic energy of emitted photoelectrons is given by: K_ = h v - where h is Planck's constant, v is the frequency of incident radiation, and is the work function of the material. The stopping potential V₀ is related to the maximum kinetic energy by: e V₀ = K_ Substituting this into the photoelectric equation gives: e V₀ = h v - V₀ = h e v - e From this linear relationship, it is evident that the stopping potential V₀ increases as the frequency of incident