Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
Concepts Of Physics MCQ Edition [Volume 2]PhysicsPhotoelectric Effect and Wave–Particle Duality

A point source of light is utilized in a photoelectric effect setup. If the source is moved farther from the emitting metal, the stopping potential

Options

  1. Awill decrease
  2. Bwill increase
  3. Cwill either increase or decrease
  4. Dwill remain constant

Correct answer

D. will remain constant

Step-by-step solution

The stopping potential in a photoelectric effect experiment is given by Einstein's photoelectric equation: eV₀ = h - where V₀ is the stopping potential, is the frequency of incident light, and is the work function of the metal. When the point source of light is moved farther from the emitting metal, the intensity of light falling on the metal decreases. However, the frequency of the incident light remains unchanged. Since the stopping potential depends only on the frequency of the incident light and the nature of t

Practice Photoelectric Effect and Wave–Particle Duality on Quantrex Academy →

More from Photoelectric Effect and Wave–Particle Duality

Determine the net energy absorbed by an atom during a process in which it absorbs a photon of wavelength 500 nm and subsequently emits another photon of wavelength 700 nm .Compute the number of photons emitted per second by a 10 W sodium vapour lamp. Assume that 60 % of the consumed energy is converted into light. The wavelength of sodium light is 59Assuming the sun is directly overhead, the surface of the earth receives sunlight at 1.4 imes 10^3 W m ⁻² . Treat the light as monochromatic with an average wavelength of 500 nm , Assuming the sun is directly overhead, the surface of the earth receives sunlight at 1.4 10^3 W m ⁻² . Treat the light as monochromatic with an average wavelength of 500 nm , and aAssuming the sun is directly overhead, the surface of the earth receives sunlight at 1.4 10^3 W m ⁻² . Treat the light as monochromatic with an average wavelength of 500 nm , and aDetermine the momentum of a light photon that has a wavelength of 500 nm .Visible light encompasses wavelengths ranging from 400 nm to 780 nm . Determine the energy range of the photons of visible light.A beam of white light strikes a plane surface normally. The surface absorbs 70 % of the light while reflecting the remainder. Determine the force exerted on the surface by the beam Full Photoelectric Effect and Wave–Particle Duality list All Concepts Of Physics MCQ Edition [Volume 2] PYQs