Sound is produced by Vibrations
Sound is produced by Vibrations
Sound: We think of the word ‘sound’ whenever we have a sense of hearing in our ears. We, therefore, say that sound is a form of energy which produces the sensation of hearing in our ears. The sound can be produced by striking, shaking, blowing, rubbing or plucking, different objects. A close look at these situations shows that we actually set one or another objects, into vibrations. It is these vibrations that produce sound. Whenever a source produces a sound, there are always some vibrations linked with it. We can, therefore think of vibrations as the basic cause of all sounds.`Vibration: The to and fro or back and forth motion of an object is called vibration.
How sound is produced: A sound is produced because of a vibration. Thus, sound is a vibration that is capable of being heard. The organ in human beings that is involved in the production of sound is the larynx (commonly called the voice box). The voice box is situated in the neck at the upper end of wind pipe. The sound produced is controlled by vocal cords, which are thin membranes stretched across the voice box. There are muscles attached to the vocal cords. These muscles can vary the tension in the vocal cords (i.e., make them tight or loose). With the help of these muscles, we can make different sounds.The vocal cord in men are about 20 mm long and in women they are 15 mm long.
If the amplitude of vibration is large, sound is ______________ | |||
| Right Option : B | |||
| View Explanation | |||
Vibrating bodies produce _________ . | |||
| Right Option : A | |||
| View Explanation | |||
Which of the following statements are correct ? (i) Sound is produce by vibrations. (ii) Sound reqires a medium for propagation. (iii) Light and sound both require a medium for propagation. (iv) Sound travels slower than light. | |||
| Right Option : D | |||
| View Explanation | |||
Students / Parents Reviews [10]
My experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
