Compton effect and quantum nature of light, Physics

Assignment Help:

Q. Describe Compton effect. Drive an expression for Compton shift. How does it support the particle nature of light. 

Compton Effect and Quantum Nature of Light

A.H. Compton in 1923, while studying the scattering of  X rays by a block of paraffin observed that the wavelength of the scattered radiation was greater than wavelength of incident radiation and this shift in wavelength was dependent on the angle of the scattering. The wavelength of scattered radiation is found maximum at right angles to the direction of incident beam. This effect is known as Compton Effect.

Classical theory is failed to explain this observed effect of increment in wavelength. According to classical theory the wavelength of incident radiation and scattered radiation must be same. Compton explain this effect by assuming that light is consist of a large number of oscillating particles vibrate with different frequencies known as Quanta having energy. Thus Compton effect gives us an experimental evidence of quantum nature of light.

Theory of Compton Effect

Let us consider the phenomenon of scattering as a elastic collision between the incident photon and electron. The conservation of energy and momentum will hold since collision is elastic.

Compton assumed the electron to be free and at rest before collision with the incident photon. After the collision has taken place, the relativistic mass of the electron to be electron to be considered instead of its rest mass. A small parts of energy of high energy photon is also being transferred to the electron is this process.

During the collision process some of the part of this energy is imparted to the electron, which in turn gain kinetic energy and so recoil. The direction of scattered photon is given by angle q, whereas the direction of recoil electron. 


Related Discussions:- Compton effect and quantum nature of light

Explain the types of equilibrium, STABLE EQUILIBRIUM If object is in st...

STABLE EQUILIBRIUM If object is in stable equilibrium and if we displace object to a very little displacement dr then it will return back to starting position. UNSTABLE EQU

Differentiate between displacement and conduction current, Differentiate be...

Differentiate between displacement current and conduction current.

Sound, experiments on how sound waves travel faster in iron

experiments on how sound waves travel faster in iron

Coulomb force experienced at its centre, a) Three equivalent charges 2.0 mi...

a) Three equivalent charges 2.0 micro coulomb each, are held fixed at the three corners of an equilateral triangle of side 5 cm. Determine the Coulomb force experienced at its cent

Magnetism - basic concepts, Magnetism - Basic concepts: 1. Pole st...

Magnetism - Basic concepts: 1. Pole strength: The ability of a pole  of  a magnet to attract or repel another magnetic pole is called its pole strength. Units : A-m 2.

Motion, a car of mass 800kg is pulling a trailer 300kg where sin a=1|200.Re...

a car of mass 800kg is pulling a trailer 300kg where sin a=1|200.Resistance to motion(apart from gravity) is 1.5N per kg of mad for each vehicle.calculate the pulls of the engine a

Deformation in a real body, DEFORMATION IN A REAL BODY DUE TO APPLICATION O...

DEFORMATION IN A REAL BODY DUE TO APPLICATION OF FORCE The idea of a hard body, where the constituent molecules are fixed with respect to each other, is theoretical. Till how we

Electromagnatisum, Your friend has gifted an earphone set to you. While mus...

Your friend has gifted an earphone set to you. While music is on you will try to oppose the two ear phone pieces to attract. Task-I: Will they attract? If yes, why so?

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