Class 10th Physics Chapter 2 Short Notes

Complete Notes on Chapter No.11:  Class 10th Physics Chapter 2 Short Notes written by Mr. Adnan Haider. These computerized notes are very helpful in the preparation of Class 10th Physics Chapter 2 Short Notes for students of the 10th class Physics and these are according to the paper patterns of all Punjab boards.

• Important class 10 physics chapter 2 short questions for all students of Punjab  Textbook Board.
• Sound Exercise Multiple Choice Questions ( MCQs ) with correct Answers
• Sound Exercise Short Questions with Answers.
• Important physics mcqs for class 10 chapter 2 for all students of Punjab  Textbook Board.
• What is the necessary condition for the production of sound?
• What is the effect of the Medium on the Speed of Sound? In which medium sound travels faster: air, solid, or liquid?
• Important physics class 10 chapter 2 mcqs for all students of Punjab  Textbook Board.
• What is meant by Reverberation?
• Calculate the frequency of the sound wave of speed 340 ms-1 and wavelength 0.5.
• Sound is a form of wave. List at least three reasons to support the idea that sound is a wave
• What would happen to the loudness of sound with the increase in its frequency?
• Important mcqs of physics class 10 chapter 2 for all students of Punjab  Textbook Board.
• What is the difference between the Loudness and Intensity of sound? Derive the relationship between the two.
• On what factors does the loudness of sound depend?
• Important 10th class physics chapter 2 mcqs for all students of Punjab  Textbook Board.
• What do you mean by the term Intensity level of the sound? Name and define the unit of intensity level of sound
•  Which animal have the loudest sound?
• Important physics class 10 chapter 2 full explanation for all students of Punjab  Textbook Board.
• What is the difference between Frequency and Pitch?
•  Describe the effect of change in amplitude on loudness and the effect of change in frequency on the pitch of sound.
• Define Acoustics.
• Important class 10 physics chapter 2 important questions for all students of Punjab  Textbook Board.
• If we clap or speak in front of a building while standing at a particular distance, we rehear our sound after some time. Can you explain how does this happen?
• What is the Audible frequency range for the Human Ear? Does this range vary with the age of people? Explain.
• Important physics class 10 chapter 2 important questions for all students of Punjab  Textbook Board.
• Explain that Noise is a Nuisance.
• Describe the importance of Acoustic Protection.
• What are the uses of Ultrasound in Medicine?
• Why two tin cans with a string stretched between them could be a better way to communicate than merely shouting through the air?
• Why the sound of women is shrill as compared to men?
• Important class 10 physics chapter 2 exercise solutions for all students of Punjab  Textbook Board.
• What is meant by Soundless Whistle?
• Define SONAR.  How can noise pollution are reduced?
• Define Echo Or Reflection of Sound.
• Important class 10 term 2 physics important questions for all students of Punjab  Textbook Board.
• Is there any difference between echo and reflection of sound?
• Define Ultrasound.
• Why ultrasound is useful in the medical field?
• Important physics important questions class 10 term 2 for all students of Punjab  Textbook Board.
• How sound waves are produced?
• What is the Intensity of the sound of the Rusting of leaves and the Faintest Audible sound?
• Define a Stethoscope and Name two characteristics of sound. 
• Important 10th class physics chapter 2 important questions for all students of Punjab  Textbook Board.
• Define Quality of sound.
• What is the difference between Musical sound and Noise?
• Why sound waves are called mechanical waves?
• Intensity: The sound waves transfer energy from the sounding body to the listener. The intensity of sound depends on the amplitude of sound wave and is defined as:
• Important 10th class physics chapter 2 mcqs solved for all students of Punjab  Textbook Board.
• "Sound energy passing per second through a unit area held perpendicular to the direction of propagation of sound waves is called intensity of sound".
• Intensity is a physical quantity and can be measured accurately. The unit of intensity of sound is watt per square metre (W ^-2).
• Important class 10 physics chapter 2 mcqs with answers for all students of Punjab  Textbook Board.
• Sound Intensity Level: The human ear responds to the intensities ranging from 10^-12 W m^-2 to more than 1 W m^-2 (which is loud enough to be painful). Because the range is so wide, intensities are scaled by factors of ten. The barely audible and the faintest intensity of sound i.e., 10^1- W m^-2 is taken as reference intensity, called zero bel (a unit named after Alexander Graham Bell).
• Important class 10th physics chapter 2 important notes for all students of Punjab  Textbook Board.
• REFLECTION OF SOUND: When we clap or shout near a reflecting surface such as a tall building or a mountain, we hear the same sound again a little later. What causes this? This sound which we hear is called an echo and is a result of reflection of sound from the surface.
• Important physics important questions class 10 chapter 2 for all students of Punjab  Textbook Board.
• "When sound is incident on the surface of a medium it bounces back into the first medium. This phenomenon is called echo or reflection of sound".
• Important 10th class physics chapter 2 exercise for all students of Punjab  Textbook Board.
• NOISE POLLUTION: We enjoy the programmes on radio or television by hearing sounds of different qualities. In musical programmes, we hear sound produced by musical instruments such as flute, harmonium, violin, drum etc. Sound of these instruments has pleasant effect on our ears. Such sounds which are pleasant to our ears are called musical sounds. However, "some sounds produce unpleasant effects on our ears such as sound of machinery, the slamming of a door, and sounds of traffic in big cities. Sound which has jarring and unpleasant effect on our ears is called noise".