A photoelectric surface is illuminated s...

A photoelectric surface is illuminated successively by monochromatic light of wavelength `lambda` and `(lambda)/(2)`.If the maximum kinetic energy of the emitted photoelectrons in the second case is 3 times in the first case,the work function of the surface of the material is: (h=Plank's constant ,c=speed of light)

`(hc)/(2lambda)`

`(3hc)/(lambda)`

`(hc)/(3lambda)`

`(hc)/(lambda)`

Text Solution

Verified by Experts

The correct Answer is:

Topper's Solved these Questions

SIMPLE HARMONIC MOTION
ALLEN |Exercise Exercise-05 [A]|39 Videos
SIMPLE HARMONIC MOTION
ALLEN |Exercise Exercise-05 [B]|12 Videos
SIMPLE HARMONIC MOTION
ALLEN |Exercise Exercise-04 [A]|20 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

A metallic surface is illuminated alternatively with light of wavelenghts 3000 Å and 6000 Å . It is observed that the maximum speeds of the photoelectrons under these illuminations are in the ratio 3 : 1 . Calculate the work function of the metal and the maximum speed of the photoelectrons in two cases.

The surface of cesium is illuminated with monochromatic light of various wavelengths and the stopping potential for the wavelength are measured. The results of this experiment is plotted as shown in the figure Estimate the value of work function of the cesium and Planck's constant.

Given in fig. is the graph between frequency v of the incident light and maximum kinetic energy (E_(k)) of the emitted photoelectrons. Find the values of (i) threshold frequency and (ii) work function form the graph.

This question has statement - 1 and statement - 2 of the four choice given after the statements choose the one that best describes the two statements statement - 1 : A metallic surface is irradiated by a monochromatic light of frequency v gt v_(0) (the threshold frequency). The maximum kinetic energy and the stopping potential are K_(max) and V_(0) respectively if the frequency incident on the surface is doubled , both the K_(max) and V_(0) are also doubled statement - 2 : The maximum kinetic energy and the stopping potential of photoelectron emitted from a surface are linearly dependent on the frequency of incident light

A metal is illumimated by light of two different wavelength 248nm and 310 nm . The maximum speeds of the photoelectrons corresponding in these wavelength are u_(1) and u_(2) respectively . If the ratio u_(1) : u_(2) = 2 : 1 and hc = 1240 eVnm , the work function of the meal is nearly

A certain metallic surface is illuminated with monochromatic light of wavelength lambda .The stopping potentail for photelectric current for this light is 3V_(0) .If the same surface is illuminated with light of wavelength 2lambda ,the stopping potential is V_(0) .The threshold wavelength for this surface for photoelectric effect is

When a metallic surface is illuminated by a monochromatic light of lamda the stopping potential for photoelectric current is 4V_(0) when the same surface is illuminated by light of wavelength 3 lamda the stopping potential is V_(0) The threshold wavelength for this surface for photoelectric effect is -

What will be maximum value of wavelength by which photo-electric emission can be obtained on metal surface with work function of 3.2 eV? ( h=6.625xx10^(-34) Js)

A:When monochromatic beam of light is incident on metal surface ,it is dispersed in form of kinetic energy. R:Work function of metal depend on depth of metal.

Photo-electric emission is observed from a metalli surface for frequenceis f_(1) and f_(2) of the incident light. (f_(1)gtf_(2)) .If the maximum values of K.E. of photo-electrons emitted in two cases are in the ratio 1:n, then the threshold frequency of a metallic surface is .......

ALLEN -SIMPLE HARMONIC MOTION-Exercise-04 [B]

This question contains Statement - 1 and Statement -2 Of the four choi...
Text Solution
|
A nucleus of mass M + Deltam is at rest and decays into two daughter n...
Text Solution
|
A nuclear of mass M +deltam is at rest and decay into two daughter nu...
Text Solution
|
A radiaoactive nucleus (initial mass number A and atomic number Z emit...
Text Solution
|
The half life of a radioactive substance is 20 minutes . The approxima...
Text Solution
|
After absorbing a slowly moving neutrons of mass m(N) (momentum ~0) a...
Text Solution
|
Statement-1:A nucleus having energy E(1) decays by beta^(-) emission t...
Text Solution
|
Assume that a neutron breaks into a proton and an electron . The energ...
Text Solution
|
As an electron makes a transition from an excited state to the ground ...
Text Solution
|
Match List-I (Fundament Experiment) with List-II (its conclusion) and ...
Text Solution
|
If one were to apply Bohr model to a particle of mass 'm' and charge '...
Text Solution
|
de-Brogile wavelength of an electron accelerated by a voltage of 50 V ...
Text Solution
|
Let N(beta) be the number of beta particles emitted by 1 gram of Na^(2...
Text Solution
|
The de-Brogile wavelength associated with electron in the n = 4 level ...
Text Solution
|
Half-lives of two radioactive substances A and B are respectively 20 m...
Text Solution
|
Radiation of wavelength lambda is incident on a photocell.The fastest ...
Text Solution
|
When photon of wavelength lambda(1) are incident on an isolated shere ...
Text Solution
|
A hydrogen atom makes a transition from n=2 to n=1 and emits a photon....
Text Solution
|
A neutron moving with a speed v makes a head-on collision with a hydro...
Text Solution
|
A photoelectric surface is illuminated successively by monochromatic l...
Text Solution
|