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# Physics

Articles related to class 9, 10, 11, 12 and B.Sc.

## CBSE Class 12 Physics syllabus 2023-2024

Here is the CBSE Class 12 Physics syllabus 2023-2024 CLASS XII (THEORY) (Total Periods: 180) Unit I: Electrostatics (Periods 25) Electric charges and their conservation. Coulomb’s law – force between two point charges, forces between multiple charges; superposition principle and continuous charge distribution. Electric field, electric field due to a point charge, electric field lines; electric …

## Dimensional formula of strain

Introduction: Understanding Strain in Physics In physics, particularly in the study of elasticity, strain is a key concept. It is a measure of deformation representing the displacement between particles in a material body. Strain quantifies the relative change in shape or size of an object due to externally applied forces or a change in temperature. …

## Class 11 Physics Chapter 1 Notes – Physical World

Physical World Class 11 Notes Physics Chapter 1 Class 11 Physics Chapter 1 Notes: Welcome to our comprehensive notes on the chapter called ‘Physical World’ of class 11 physics NCERT book. This chapter provides an overview of the broad and diverse field of physics. It explores the scope of physics, its interaction with technology and …

## Concept of motion and rest in physics

An object is said to be in state of motion if its position changes with the passage of time. If the position of the object does not change with the passage of time then the object is said to be at rest. We have now define what is motion and to describe it we consider simplest form of motion that is motion of any object in one dimension for example car moving on the road. To determine the position of car at different times , we could measure its distance from starting point and record all these observations. These observations can be recorded in form of a table or we can draw a distance versus time graph for the motion of the car and see how it is moving.

## Difference between resistance and resistivity

In this article, we will learn about the difference between resistance and resistivity. Students first come across these terms while studying Electricity where the concept of electric current, resistance, and resistivity are introduced. For the basic introduction visit our notes on electricity. TLDR – Too Long Don’t ReadBoth resistance and resistivity describe how difficult it …

## Effect of Temperature on Drift Velocity in Conductors

Effect of Temperature on Drift Velocity In this article, we will discuss the effects of temperature on drift velocity in conductors. Introduction to Drift Velocity Drift velocity ($v_d$) is the average velocity attained by free charge carriers, like electrons, in a conductor due to an applied electric field. The equation for drift velocity is: v_d …

## Screw Gauge physics experiment

Introduction

A screw pitch gauge is a precision instrument. It is used for measuring diameter of circular objects mostly wires, with an accuracy of 0.001cm. It consists of a hollow cylinder mounted on a U frame. The hollow cylinder leads to a ratchet which is meant for fine adjustment. The U frame consists of a flat end known as stud and a screw on the other side. This screw can be moved inside the nut by fitted in the U frame by rotating the hollow cylinder called the thimble. This is called the main scale. The hollow cylinder or the thimble is graduated into 50 or 100 equal parts. This is called the circular scale.

## Meaning of alpha symbol in physics

Alpha Symbol Physics In this article, we will look into the meaning of the alpha symbol in physics. In physics and other scientific notations, various Greek alphabets are used to represent various physical quantities. Let us now have a look at what does Greek symbol alpha mean in physics. Alpha symbol Lowercase Alpha $\alpha$ Symbol …