Embibe Big Book for Science for Telangana State Board Class 9

Science

Refraction of Light at Plane Surfaces

This chapter describes the refraction of light at plane surfaces. It explains the relative refractive index, total internal refraction, and the applications of total internal reflection. It briefs on the refraction of light through a glass slab.

In this topic, we will learn the concept of refraction of light. It includes the examples of glass window panes. It explains the phenomenon of recreation of light and different mediums. It also shows both the concepts with the help of a figure.

Refraction

From this topic, we will study the refractive index of a medium. It contains figures of refraction from water to glass and from glass to water with the values of refractive indices. It also contains numerous sample problems based on this concept.

Refractive Index

The topic briefly explains the total internal reflection along with the conditions required for it. It also explains the differences between the reflection and total internal reflection through a table.

Total Internal Reflection

This topic explains the concept of light and refraction. It explains the phenomenon of refraction through a prism along with a figure. It also discusses different factors on which the value of the angle of deviation depends.

Refraction Through a Glass Slab

Biology Class 9

Physical Science Class 9

SCIENCE TEXTBOOK FOR CLASS IX

Practical Application of Total Internal Reflection

Total Internal Reflection: How It Occurs?

Examples of Refraction

Introduction to Refraction

Optical Density

In this chapter, we will discuss the production and propagation of sound through different mediums. We will come across the description of some musical instruments. It also highlights the structure of the ear with the help of a well-labelled diagram.

Sound

This chapter provides knowledge of thermal equilibrium. It explains specific heat and its applications. It details the method of mixtures and its principles. It briefs on evaporation, condensation, boiling, melting, and freezing.

Heat

This chapter describes the term work with the aid of examples. It explains kinetic, potential, and mechanical energy along with the units and derivations. It also discusses the law of conservation of energy and sources of energy.

Work and Energy

This chapter explains the concept of thrust and pressure with their units. It elaborates on Archimedes’ principle and its application. We will learn about buoyancy and how to measure the force of buoyancy. It also explains Pascal's principle.

Floating Bodies

This chapter deals with gravity and gravitational force. It explains the universal law of gravitation and acceleration due to gravity. Mass, weight, and free-falling of the body are also discussed here in detail along with their derivations.

Gravitation

In this chapter, we will learn about Newton's laws of motion. Each law is explained in detail with the aid of activities. It discusses inertia, mass and acceleration. A brief note on the conservation of momentum and impulse is also given here.

Laws of Motion

This chapter deals with motion and its types. It defines distance, displacement, and velocity. We will learn about uniform and non-uniform motion with the aid of examples. It also explains acceleration and equations of uniform accelerated motion.

Motion

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Refraction of Light at Plane Surfaces

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