Category Archives: Under Graduation

Articles related to undergraduate courses like B.Sc. , B.Tech.

Meter Bridge Experiment using Wheatstone Bridge Principle

What is Wheat Stone Bridge? A Wheatstone bridge is an electrical circuit used to measure an unknown electrical resistance by balancing two legs of a bridge circuit, one leg of which includes the unknown component. it was invented by Samuel Hunter Christie in 1833 and improved and popularized by Sir Charles Wheatstone in 1843.Although today digital multimeters provide the simplest way to measure a resistance, … Continue reading Meter Bridge Experiment using Wheatstone Bridge Principle »

Best Electricity and Magnetism books for B.Sc.

Today in this post I’ll be writing about the electricity and magnetism books that I feel might be good considering whiling studying this subject for your undergraduate exams and also for when you appear for entrance exams like JAM for getting admission in masters in physics from good university or institute

ELECTRICITY AND MAGNETISM by A Mahajan, A Rangwala :- This is the first book in my list and I really like this book as it is extensive in its content and things are explained pretty clearly. You can consider this book for its comprehensiveness. You can take a look at the preview of this book here

What is Heisenberg Uncertainty Principle

Heisenberg Uncertainty Principle or indeterminacy principle was given by German scientist Warner Heisenberg according to which position and momentum of an object can not be measured simultaneously. So if we measure the position of some particle more precisely then its momentum is measured less precisely and vice versa.

Heisenberg’s uncertainty principle can be written as follows

Uncertainty relation results in rejection of semi classic Bohr model for hydrogen atom

Question

Show that the uncertainty relation forces us to reject the semi classical Bohr model for the hydrogen atom

Solution

In Bohr atom model we deal with the electron as a classical particle. The allowed orbits are defined by the quantization rules:

The radius r of a circular orbit and the momentum

Nuclear Fission Basics

Nuclear fission is said to have occurred when nucleus of an atom splits into several small fragments. In nuclear physics nuclear fission either occurs as a nuclear reaction or as a radioactive decay process in which nucleus of an atom splits into smaller and lighter nuclei. The fission process often produces free neutrons and photons (in the form of gamma rays), and releases a very large amount of energy even by the energetic standards of radioactive decay.

Maxwell’s Equations – Differential form of Faraday’s law (Part 6)

From the left side of the equation is nothing but the curl of the electric field and it tells about the tendency of field lines to circulate around a point . Curl of a vector means how much the vector curls around the point in question. The right side represents the rate of change of magnetic field with time. So from this it could be stated that