Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AP EAMCET202022 Sep 2020Morning ShiftPhysicsDual Nature of MatterActual

A metal surface is illuminated by a light of given intensity and frequency to cause photoemission. If the intensity of illumination is reduced to one-fourth of its original value, then the maximum kinetic energy of the emitted photoelectrons would become

Options

  1. Aunchanged
  2. Bhalf of the original value
  3. Ctwice of the original value
  4. Dfour times of the original value

Correct answer

A. unchanged

Step-by-step solution

In photoelectric emission, maximum kinetic energy of emitted photoelectrons does not depend upon the intensity of incident radiation. It depends upon the frequency of incident radiation. Hence, when intensity of incident radiation is reduced to one-fourth, then maximum kinetic energy of emitted photoelectrons remains unchanged.

Practice Dual Nature of Matter on Quantrex Academy →

More from Dual Nature of Matter

The basic principle used behind the working of electron microscope is: 2026The variation of the stopping potential ( V₀ ) with the frequency of incident radiation(n) is as given below. [ n₀ - threshold frequency. h- Planck's constant e- electronic charge] 2026When metal of work function 1.4eV is exposed to a radiation, the maximum kinetic energy of the electron emitted is 0.4eV. The stopping potential required is: 2026A monochromatic beam of photons of intensity to 1.5 Wm⁻² and energy 11.2 eV is incident on a material of work function 4.8 eV. What is the maximum speed of photoelectrons emitted d 2026What is the ratio of de Broglie wavelength of an electron to that of proton if the velocity of proton is 1 6 the velocity of electron? 2026Consider normal incidence of a monochromatic beam of photons of power P on a flat surface. Of the incident beam, 10% gets absorbed, 10% gets transmitted, and the rest is reflected 2026An experimental study of the photoelectric effect involves a metal of work function ₀ . What is the smallest wavelength of the incident photon to photoemit an electron of mass m wh 2026Work function of the metal is 2026 Full Dual Nature of Matter list All AP EAMCET PYQs