Category Archives: B.Sc.

Kinetic energy of system of particles

This article is about Kinetic energy of system of particles. This topic comes under the chapter Dynamics of System of Particles. It is for B.Sc. students and comes under subject mechanics. For full chapter notes links please visit this link Dynamics of System of Particles Kinetic energy of the system of particles Let there are n number of particles in a n particle system and … Continue reading Kinetic energy of system of particles »

Photoelectric effect – brief introduction

Photoelectric effect The main idea of this article is to present a brief overview of the phenomenon called photoelectric effect. Photoelectric Effect is the emission of electrons by a substance under the action of light Photoelectric phenomenon was first noticed by Hertz when he noticed that sparks occur more readily in the air gap of his transmitter when ultraviolet light is directed at one of … Continue reading Photoelectric effect – brief introduction »

heisenberg uncertainty principle

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 verse.Heisenberg uncertainty principle can be written as follows If a measurement of position of … Continue reading heisenberg uncertainty principle »

Coordinate transformation : translation, inclined and rotation

This article is about Coordinate transformation . In this article we will look at coordinate transformation in case of translation, inclination and rotation of S’ frame of reference with respect to S frame of reference. This article is mainly for B.Sc. first year and comes under subject Mechanics. Coordinate transformation If we define the position of a particle in two different frames of then in … Continue reading Coordinate transformation : translation, inclined and rotation »

Newton’s laws of motion and applications

This article is about Newton’s laws of motion and applications for B.Sc first year students and is also applicable if you are preparing for exams like JAM , GATE, JEST , CSIR-NET etc. It comes under the subject Mechanics. If you like the content do help us by sharing it among your fellow students. Introduction Sir Isaac Newton expressed his ideas regarding the motion of … Continue reading Newton’s laws of motion and applications »

Vector Questions

This page contains Vector questions for B.Sc. first year mechanics. You can also practice these questions if you are appearing for any after B.Sc. entrance exams(ex. IIT JAM) for pursuing M.Sc. Question 1 Define direction cosines of a vector. If  $l_1$, $m_1$, $n_1$ and $l_2$, $m_2$, $n_2$ are the direction cosines of two vectors show that the angle $\theta$ between them is given by $cos\theta … Continue reading Vector Questions »