## CRSU-MDU B.Ed.(first year) paper 2017

This page is about CRSU B.Ed.(I’st year) previous year paper 2017. I have papers for all three compulsory papers Paper 1 : Childhood and growing up Paper 2 : Contemporary India and Education Paper 3 : Learning and teaching and optional papers Optional 1 : Pedagogy of Mathematics Optional 2 : Pedagogy of physical science

## 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 …

## Lorentz Transformation

Derivation of Lorentz transformation equations using orthogonal transformations Let us consider two uniformly moving frames of reference where origins coincides at $t=0$. let the source of light is fixed at unprimed frame of reference and emits a pulse of light. The observer fixed in the unprimed frame of reference will observe a spherical wave-front propagating …

## Frame of reference : Cartesian coordinate system with Velocity and acceleration

The motion of different bodies can be conveniently described if we imagine co-ordinate system attached to a rigid body and the positions of different bodies in space can be described w.r.t. it, then such co-ordinate system is called frame of reference.

## External and internal forces (Dynamics of system of particles)

This lesson is about External and internal forces (Dynamics of system of particles) . This chapter comes under subject Mechanics and is for B.Sc. Physics students.   While studying Newton’s laws of motion most of the time we have considered objects (for example planets, projectiles etc..) to be point particles rather then extended bodies. We did …

## constraints in physics (classical mechanics) with examples

This article is about Degree of freedom and constraints in classical mechanics. You can use this article for studying B.Sc, JAM , GATE and CSIR-NET Physics. Definition: – The minimum number of independent variables or co-ordinates required for specifying the position of a dynamical system consisting of one or more particle is called Degree of freedom.