State any three laws of photo electric emission, Physics

Assignment Help:

Q. State any three laws of photo electric emission?

(i) For a specified photo sensitive material there is a minimum frequency called the threshold frequency below which emission of photoelectrons stops completely however great the intensity may be.

(ii) For a specified photosensitive material the photo electric current is directly proportional to the intensity of the incident radiation provided the frequency is greater than the threshold frequency.

(iii) The photoelectric release is an instantaneous process that is there is no time lag between the incidence of radiation and the emission of photo electrons.

(iv) The maximum kinetic energy of the photo electrons is straight proportional to the frequency of incident radiation, but is independent of its intensity.


Related Discussions:- State any three laws of photo electric emission

Draw a labelled diagram of an ac generator, Describe with the help of a lab...

Describe with the help of a labelled diagram the underlying principle and working of a step-up transformer. Why cannot such a device be used to step-up D.C. voltage? Or Dr

Inertia on a bicycle, Inertia on a bicycle Get your bicycle going and t...

Inertia on a bicycle Get your bicycle going and then apply the brakes rapidly. View the tendency of your body to stay in motion and pitch you over the handlebars. This is the r

Write any four characteristics of electromagnetic waves, Write any four cha...

Write any four characteristics of electromagnetic waves. Give two uses each of 1. Radio-waves 2. Micro-waves.

Define polarization of ideal gas?, Define Polarization of Ideal Gas? Ev...

Define Polarization of Ideal Gas? Evaluate the electric polarization P of an ideal gas consisting of molecules having a constant electric dipole moment P in a homogeneous exter

What is packing polymorphism, What is packing polymorphism When polymor...

What is packing polymorphism When polymorphism exists as a result of change in crystal packing, it is called packing polymorphism. Polymorphism can also result from the existen

lens maker equation, what is the physics principle involved in the lens ma...

what is the physics principle involved in the lens maker equation

Headings and vectors, A child in danger of drowning in a river is being car...

A child in danger of drowning in a river is being carried downstream by a current that has a speed of 2.75km/hr. The child is 0.620km from shore and 0.755km upstream of a boat land

What are echelon effects and focusing, Show any two applications of beats. ...

Show any two applications of beats. What are "Echelon effects" and "Focusing"?

What makes a good common end, What makes a good common end? The capacit...

What makes a good common end? The capacity to hold the fibers always and flushes, lack of adhesives, absence of packing losses and optical polish.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd