Home
Class 12
PHYSICS
Radiations of frequency 10^(15)Hz is inc...

Radiations of frequency `10^(15)Hz` is incident on three photosensitive surfaces. A,B and C. Following observations are recorded,
(a) Surface A. No photoemission occurs.
(b) Surface B. Photoemission occurs but the photoelectrons have zero kinetic energy.
(c) Surface C. Photoemission occurs and photoelectrons have some KE.
Based on Einstein's photoelectric equation, explain the three observations.

Promotional Banner

Topper's Solved these Questions

  • SAMPLE PAPER 2023 TERM I

    CBSE MODEL PAPER|Exercise SECTION D |4 Videos

  • SAMPLE PAPER 2023 TERM I

    CBSE MODEL PAPER|Exercise SECTION B |9 Videos

  • SAMPLE PAPER 2022 TERM II

    CBSE MODEL PAPER|Exercise SECTION B|16 Videos

  • SAMPLE QUESTION PAPER (THEORY)

    CBSE MODEL PAPER|Exercise Section – E|6 Videos

Similar Questions

Explore conceptually related problems

(i) State two important features of Einstein's photoelectric equation. (ii) Radiation of frequency 10^(15)Hz is incident on two photosenstive surface P and Q. There is no photoemission from surface P. Photoemission occurs from Q but photoelectrons have zero kinetic energy. Explain these observation and find the value of work function for surface Q.

Two photosensitive X and Y are exposed to radiations of frequency 10^(12)Hz . Comment on threshold frequency of each surface if photoelectrons emitted from surface X have zero kinetic energy and that from surface Y have some positive kinetic energy .

Radiations of frequencies 8xx10^(15) Hz and 5xx10^(15) Hz are incident one after the another on the same photosensitive surface. If is found that the kinetic energies of the photo electrons emitted from the surface are in the ratio of 2:1 . What is the threshold frequency for the surface ?

A photon of wavelength 5000 lambda strikes a metal surface with work function 2.20 eV calculate aTHe energy of the photon in eV b. The kinetic energy of the emitted photo electron c. The velocity of the photoelectron

Radiation of frequency v=9v_(0) is incident on a metal surface, having threshold frequency v_(0) . The maximum velocity of the ejected photoelectrons is 6xx10^(6)m//s . What will be the maximum velocity of the ejected photoelectrons , if v is reduced to 3v_(0) ?

The work function of a surface is 3.1 eV. A photon of frequency 1x 10^(15) Hz. Is incident on it. Calculate the incident wavelength is photoelectric emission occur or not.

Photoelectron emission is observed for three different metals A,B and C. the kinetic energy of the fastest photoelectrons versus frequency 'v' is plotted for each metal. Which of the following graphs can be observed?