Home
Class 12
PHYSICS
A graph regarding photoelectric effect i...

A graph regarding photoelectric effect is shown between the maximum kinetic energy of electrons and the frequency of the incident light. On the basis of data as shown in the graph, calculate (a) threshold frequency , (b) work- function, (c ) planck constant

Text Solution

Verified by Experts

The correct Answer is:
A, B, C, D

(a) `f_0 = f_A = 10xx10^(14)Hz = 10^(15) Hz`
(b) `W=|K_(max)|_c = 4 eV`
(c ) `W = hf_0 rArr h = (W)/(f_0).`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • MODERN PHYSICS - 1

    DC PANDEY|Exercise Level 2 Single Correct|22 Videos
  • MODERN PHYSICS - 1

    DC PANDEY|Exercise Level 2 More Than One Correct|6 Videos
  • MODERN PHYSICS - 1

    DC PANDEY|Exercise Level 1 Objective|37 Videos
  • MODERN PHYSICS

    DC PANDEY|Exercise Integer Type Questions|17 Videos
  • MODERN PHYSICS - 2

    DC PANDEY|Exercise Level 2 Subjective|10 Videos

Similar Questions

Explore conceptually related problems

According to Einstein's photoelectric equation, the graph between kinetic energy of photoelectrons ejected and the frequency of the incident radiation is :

In an experiment on photoelectic effect, the graph between maximum kinetic energy (K_(max)) and frequency of emitted photoelectron from metal surface is found to be a straight line as shown in fig. Calculate (a) thereshold frequency. (b) work function of metal in electron volt. (c) Planck's constant and maximum kinetic energy of the emitted electron by light of frequency v=8xx10^(14)s^-1 .

Knowledge Check

  • The maximu kinetic energy (E_(k)) of the photoelectron varies with frequency (v) of the incident light as shown by the curve:

    A
    A
    B
    B
    C
    C
    D
    D
  • According to Einstein's photoelectric equation , the graph between the kinetic energy of photoelectrons ejected and the frequency of incident radiation is

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

    A
    Charge of the electron
    B
    Work function of the metal
    C
    Planck's constant
    D
    Ratio of the Planck’s constant to electronic charge
  • Similar Questions

    Explore conceptually related problems

    For a photoelectric experiment graph between kinetic energy of fastest electron and frequency of light is plotted find threshold wavelength of metal.

    The correct graph respectivley the relation between energy (E ) of photoelectrons and frequency v of incident light is

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

    In photo electric effect, the slope of the straight line graph between stopping potential and frequency of the incident light gives the ratio of Planck's constant to

    For a photoelectric cell, the graph shown the variation of cut off voltage ( V_0 ) with frequency (v) of incident light is