Class 10th Physics Chapter 8 Short Notes

Complete Notes on Chapter No.17: Class 10th Physics Chapter 8 Short Notes in Physics English Medium written by Mr. Adnan Haider. These computerized notes are very helpful in the preparation of Class 10th Physics Chapter 8 Short Notes for students of the Physics and these are according to the paper patterns of all Punjab boards.

• This chapter provides the basics of information and communication technology (ICT) to the students, such as digital communication, and data storage.
• The chapter also helps in the exercise Short and Long Questions with their easy Answers, Numerical Problems, and MCQs to test understanding and application of concepts.
• By reading these notes students will be able to understand the concepts and applications in the era of the fields.

• Information and Communication Technology Exercise Multiple Choice Questions ( MCQs ) with Correct Answers
• Information and Communication Technology Exercise Short Questions with Answers.
• What is the difference between data and information?
• What do you understand by information and communication technology (ICT)?
• What are the components of information technology?
• Differentiate between the Primary memory and the Secondary memory?
• Important physics class 10 chapter 8 short notes for all students of Punjab  Textbook Board.
• Name different information storage devices and describe their uses.
•  Explain briefly the transmission of radio waves through space.
• How light signals are sent through optical fibre?
• Important 10th class physics chapter 8 mcqs for all students of Punjab  Textbook Board.
•  What is a Computer? What is the role of computers in everyday life?
• What do you understand by the terms Word Processing and Data Managing?
• Why optical fibre is a more useful tool for the communication process?
• Important mcqs of physics class 10 chapter 8 for all students of Punjab  Textbook Board.
• Which is more reliable floppy disk or a hard disk?
• What is the difference between RAM and ROM memories?
• Define telecommunication.
• Important mcqs test of physics class 10 chapter 8 for all students of Punjab  Textbook Board.
• What is meant by photophone?
• What is meant by a fax machine?
• Write the two uses of the internet.
• What is the hard disk?
• Write two advantages of e-mail.
• Important class 10 physics chapter 8 mcqs with answers for all students of Punjab  Textbook Board.
• What is a Flash drive?
• What is a Cell phone? 
• What are browsers? Give their two examples.
• BSC and MSC stand for which words?
• Important 10th class physics chapter 8 important questions for all students of Punjab  Textbook Board.
• TRANSMISSION OF LIGHT SIGNALS THROUGH OPTICAL FIBRES: Waves of visible light have a much higher frequency than that of radiowaves. This means, rate of sending information with light beams is larger than that with radiowaves or microwaves. An optical fibre has been used as transmission channel for this purpose. An optical fibre with a coating of lower refractive index is a thin strand of high-quality glass that absorbs very little light. 
• Important 10th class physics chapter 8 exercise for all students of Punjab  Textbook Board.
• An optical fibre cable is a bundle of glass fibres with thickness of a human hair. Light that enters the core at one end of the optical fibre goes straight and hits the inner wall (the cladding) of fibre optics. If the angle of incidence with cladding is less than the critical angle, some of the light will escape the fibre optics and is lost.
• Important physics class 10 chapter 8 full explanation for all students of Punjab  Textbook Board.
• However, if the angle of incidence is greater than the critical angle, light is totally reflected into the fibre optics. Then the totally reflected beam of light travels in a straight line until it hits the inner wall again, and so on. The advantage of optical fibre is that it can be used for sending very high data rates over long distances. This feature of fibre optics distinguishes it from wires. When electrical signals are transmitted through wires, the signal lost increases with increasing data rate. This decreases the range of the signal. 
• Important class 10 physics chapter 8 exercise solutions for all students of Punjab  Textbook Board.
• COMPUTER: Computer is an electronic computing machine used for adding, subtracting or multiplying. Computers work through an interaction of hardware and software. Hardware refers to the parts of a computer that you can see and touch. These include CPU, monitor, keyboard, mouse, printer, etc. The most important piece of hardware is the central processing unit (CPU) that contains a tiny rectangular chip called microprocessor. It is the “brain” of computer—the part that translates instructions and performs calculations.
• Important class 10 physics chapter 8 important questions for all students of Punjab  Textbook Board.
• INFORMATION STORAGE DEVICES: A storage device is a device designed to store information in computer. Storage devices work on different principles using electronics, magnetism and laser technology. 
• Important physics class 10 chapter 8 important questions for all students of Punjab  Textbook Board.
• PRIMARY MEMORY: It is based on electronics and consists of integrated circuits (ICs). It consists of two parts; Read only memory (ROM), which starts the computer and Random access memory (RAM), which is used in computer as temporary memory. RAM vanishes when the computer is switched off. 
• Important class 10th physics chapter 8 important notes for all students of Punjab  Textbook Board.