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

Determine magnetic circuit of uniform cross-sectional area, A section throu...

A section through a magnetic circuit of uniform cross-sectional area 2cm 2 is shown in Figure. The cast steel core has a mean length of 25cm. The air gap is 1mm wide and the

Diffrence between push and pull of an object, Q. Illustrate why is there mo...

Q. Illustrate why is there more friction when you push an object than when you pull it? Answer:- Friction doesn't differ depending upon whether an object is pushed or pull

Resistors and resistors characteristics, A resistor is a two-terminal elect...

A resistor is a two-terminal electrical or electronic component that resists an electric current by producing a voltage drop between its terminals in the accordance with ohm’s law.

Time base control 2, Time Base Control 2 Shows the effect of modifying ...

Time Base Control 2 Shows the effect of modifying the time base control on the show while there is an input voltage varying in time.

Explain electric circuit, Electric Circuit: The path by which an electr...

Electric Circuit: The path by which an electric current passed is known as an electric circuit. The electric appliances are known as resistance.

Rutherford’s gold - foil experiment , An α particle is a positively charged...

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 ob

Magnetism, What are the General Properties of Magnet

What are the General Properties of Magnet

State ohms law, Q State Ohm's law. At a steady temperature that the st...

Q State Ohm's law. At a steady temperature that the steady current flowing through a conductor is directly proportional to the potential difference between the two ends of the

What fraction of the sample will be left over, Q. Tritium has a half life p...

Q. Tritium has a half life period of 12.5 years. What fraction of the sample will be left over after 25 years? HLP = 12.5 years Number of HLPs in 25 years = 25 / 12.5 =2

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