Home
Class 12
PHYSICS
Statement-1 : In photoelectric effect, t...

Statement-1 : In photoelectric effect, the number of photoelectrons emitted is always equal to number of photons incident.
and
Statement-2 : All the photons fallin on the surface will eject photoelctron, is not necessary.

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-10

B

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-10

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is True.

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SIMPLE HARMONIC MOTION

    ALLEN |Exercise Exercise - 19|2 Videos
  • SIMPLE HARMONIC MOTION

    ALLEN |Exercise Exercise - 20|2 Videos
  • SIMPLE HARMONIC MOTION

    ALLEN |Exercise Exercise - 17|2 Videos
  • RACE

    ALLEN |Exercise Basic Maths (Wave Motion & Dopplers Effect) (Stationary waves & doppler effect, beats)|25 Videos
  • TEST PAPER

    ALLEN |Exercise PHYSICS|4 Videos

Similar Questions

Explore conceptually related problems

Statement-1 : In a photoelectric effect experiment different photoelectron have different kinetic energy. and Statement-2 : In the incident radiation different photons must have different energy.

For the photoelectric effect, the maximum kinetic energy E_(k) of the emitted photoelectrons is plotted against the frequency of the incident photons as shown in the figure. The slope of the curve gives

Two metallic plate A and B , each of area 5 xx 10^(-4)m^(2) , are placed parallel to each at a separation of 1 cm plate B carries a positive charge of 33.7 xx 10^(-12) C A monocharonatic beam of light , with photoes of energy 5 eV each , starts falling on plate A at t = 0 so that 10^(16) photons fall on it per square meter per second. Assume that one photoelectron is emitted for every 10^(6) incident photons fall on it per square meter per second. Also assume that all the emitted photoelectrons are collected by plate B and the work function of plate A remain constant at the value 2 eV Determine (a) the number of photoelectrons emitted up to i = 10s, (b) the magnitude of the electron field between the plate A and B at i = 10 s, and (c ) the kinetic energy of the most energotic photoelectrons emitted at i = 10 s whenit reaches plate B Negilect the time taken by the photoelectrons to reach plate B Take epsilon_(0) = 8.85 xx 10^(-12)C^(2)N- m^(2)

Let (n_r) and (n_b) be respectively the number of photons emitted by a red bulb and a blue blub of equal power in a given time.

Photons with energy 5 eV are incident on a cathode C in a photoelectric cell . The maximum energy of emitted photoelectrons is 2 eV . When photons of energy 6 eV are incident on C , no photoelectrons will reach the anode A , if the stopping potential of A relative to C is

Statement-1 : Work function of a metal is 8 eV. Two photons each having energy 5 eV can't eject the electron from the metal. and Statement-2 : More than one photon can't collide simultaneously with an electron.

No two electrons in an atom will have all four quantum numbers equal. The statement is known as

Work function of photo sensitive is hf_(0) If surface is incident with photon of 2hf_(0) energy,then maximum speed of electron emitted is 4xx10^(6) m/s .If energy of photon incident is changed to 5hf_(0) then maximum speed of photoelectron will be.....

In experiment of photoelectric effect width of slit is equal to de-Broglie wavelength.Beam of light is incident normal to plane and by using detector D it is detected.Which of the following best represent number of electron (N) and position of detector (y)?

Statement- 1 : When cells are connected in parallel to the external load, the effective emf increases Statement-2 : All the cell will be sending the current to the external load in the same direction