Rutherford’s gold - foil experiment , Physics

Assignment Help:

An α particle is a positively charged particle.
Rutherford observed the behaviour of these particles when they approach the interior of the atoms as shown in fig. 

Rutherford observed that most of the α particles like a, a1 , pass through the atom un deflected.

2343_Rutherfords gold foil experiment with.png

Some of the particles like b, b1  get scattered by the atom at smaller angles of deflections. The particles like c, c1  undergo large deflection at an angle less than 180o  but more than 90o . The particles like ‘d' get deflected such that they are sent back as d1  with an angle of 180o.
Such large - angle deflections require strong forces to be acting on the α particles. Rutherford argued that this would be possible if all the positive charges and mass of the atom was concentratedin a very small central region which he called the nucleus of the atom. Then the large angle deflections of α particles are c, c1, due to electric repulsive forces caused by the nucleus. From the data obtained in this experiment Rutherford calculated the radius of the nucleus and found it to be shorter than 2.4×10-15m. Because the mass of the electron is only about 1/7000th mass of an alpha particle, the effect of the presence of electrons inside the atom on the deflection of the alpha particles can safely be ignored.

 


Related Discussions:- Rutherford’s gold - foil experiment

Motion in one dimension, A tortoise can run with a speed of 0.12 m/s, and a...

A tortoise can run with a speed of 0.12 m/s, and a hare can run 20 times as fast. In a race, they both start at the same time, but the hare stops to rest for 4.0 minutes. The torto

Young'';s Moudulus, filled observation of youngs modulus using searles appa...

filled observation of youngs modulus using searles apparatus?

Standing waves or stationary waves, When two part of progressive ray trains...

When two part of progressive ray trains of similar type having the same amplitude and similar time period/ wavelength/ frequency traveling with similar velocity along the similar s

Why in inelastic collisions angle of momentum is conserved?, Mass of the sy...

Mass of the system is same. since, p=mv momentum remains same

What is the interference, What is the Interference ? A single frequency ...

What is the Interference ? A single frequency light passing through a pair of closely spaced slits will show a pattern of vertical bands, due to alternating constructive and des

What is fundamental units, The physical value which does not depend on any ...

The physical value which does not depend on any other physical quantity is known as a fundamental physical quantity like length; mass and time are known as fundamental units.

What path does an asteroid take, Q. Illustrate what path does an asteroid t...

Q. Illustrate what path does an asteroid take? Answer:- The asteroid will forever take the path minimizing its Lagrangian recognized as the least action principle in Lagra

Gray, Gray; Gy (after L.H. Gray, 1905-1965): The derived SI unit of ab...

Gray; Gy (after L.H. Gray, 1905-1965): The derived SI unit of absorbed dose, described as the absorbed dose wherein the energy per unit mass imparted to the matter through ion

Light, what is power of lens?

what is power of lens?

Besides solid, Besides solid, liquid, and gas, what is the fourth form of m...

Besides solid, liquid, and gas, what is the fourth form of matter? Ans: The fourth form of matter is plasma.

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