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UNIT 9 Wave optics 

SINDH TEXT BOOK BOARD JAMSHORO 

PHYSICS CLASS 9TH NOTES 

PHYSICS CLASS 10TH NOTES 

PHYSICS CLASS 11TH NOTES
PHYSICS CLASS 12TH NOTES  
CHAPTER 5 SINDH BOARD 

Topics 
introduction 
Nature of light 
-- light as a wave
Huygens's theory 
Reflection of light at plane mirror 
Reflection of light at a plane boundary between two media 
polarization 
Interference 
Diffraction of light 
Resolving power 
WAVE OPTICS MCQS 
WAVE OPTICS NUMERICAL 
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INTRODUCTION OF LIGHT

What is light ?  What is light in physics?

What is meant by light? Define light. 

Ans: Light enables us to see several thousands of objects every day. Though light is invisible, it makes objects around us visible. The primary source of light is the Sun. Other sources of light are an incandescent bulb, a fluorescent bulb, LET (Light Emitting Diode) the stars, etc. In an incandescent bulb, the filament is heated to a high temperature, and thus, the heat energy is converted into light.

Ø  Light is an electromagnetic radiation and can travel through vacuum. Thus, light is a form of energy which enables vision. 

     What are luminous bodies and non- luminous bodies?  Define luminous bodies and  non-luminous bodies?

    Ans: 

    luminous bodies:

 The bodies which give light on their own are called luminous bodies.  Example, the Sun, the stars, a glow worm, an electric bulb, a candle, etc.

    non-luminous bodies

The bodies which do not give out light on their own but are made visible due to the reflection of light are called non-luminous bodies. Example: chairs, walls, the moon, etc., 

What is optical medium ?  What is optical medium n physics?

Define optical medium and its types?   

The medium through which light passes is called an optical medium. Optical media are further classified into homogenous and heterogenous.

What is Homogenous Media and Heterogenous Media ?

1- Homogenous Media:  An optical medium like pure water or glass have uniform composition

In a homogenous medium, light travels along a straight line. The straight-line path of light is called ray.

The arrow mark gives the direction in which the light ray travels.

A bundle of light rays is called beam of light. If the light rays in a beam of light travel parallel to each other, the beam of light is called parallel beam.

2- Heterogenous Media: Optical media like air or muddy water, which have different composition.

What is Transparent Media ?  What is Translucent Media ?

What is Opaque Media ?

Define Transparent, Translucent and Opaque Media ? 

What is Transparent Media ? 

Transparent Media:  Media like glass, water, etc., which allow most of the light to pass through them.

  What is Translucent Media ?

Translucent Media : Tissue paper or fog allows only a part of the light energy to pass through it.

What is Opaque Media ?

Opaque Media: Substances like iron plates, stones, bricks, etc., do not allow light to pass through them. 

CHAPTER 6 GRAVITATION 

UNIT 5 GRAVITATION

SINDH TEXT BOOK BOARD JAMSHORO 

PHYSICS CLASS 9TH NOTES 

CHAPTER 5 SINDH BOARD 

6.1 Newton’s Law Of Gravitation

-- Law of Gravitation and Newton’s Third law of Motion

-- Gravitational Field

--- 6.2 WEIGHT

6.3 Mass of Earth

6.4 Artificial Satellites

--Newton’s Law of Gravitation in the motion of satellite

-- Motion of Artificial Satellite around the Earth

-- "orbital Velocity”   

--- "Critical Velocity”

Unit 6 End Question STBB PHYSICS 

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 CHAPTER 5 FORCES AND MATTER 

UNIT 5 FORCES AND MATTER

SINDH TEXT BOOK BOARD JAMSHORO 

PHYSICS CLASS 9TH NOTES 

CHAPTER 5 SINDH BOARD 

Topics 

5.1 FORCES ACTING ON SOLIDS

5.2 STRETCHING SPRINGS

-- Extension of spring

5.3 Hooke's law

5.4 Pressure

--How to calculate pressure

--High pressure, low pressure

--Pressure in fluids

--Factors affecting pressure

--Hydraulic Machine

--Pascal's law

Chapter 5 Self Assessment 

Chapter 5 MCQS 

CHAPTER 5 NUMERICAL 

Unit 5 End Question STBB PHYSICS 

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CHAPTER 4 TURNING EFFECT OF FORCES 

UNIT 4 TURNING EFFECT OF FORCE 

SINDH TEXT BOOK BOARD JAMSHORO 

PHYSICS CLASS 9TH NOTES 

CHAPTER 4 SINDH BOARD 

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Topics 

Like and Unlike parallel forces. 

Turning effect of forces 

Principle of moments 

Couple 

Center of gravity and center of mass 

Equilibrium 

States of equilibrium 

Stability.

Chapter 4 Self Assessment 

Chapter 4 MCQS 

CHAPTER 4 NUMERICAL 

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