{"id":2203,"date":"2022-12-29T10:00:25","date_gmt":"2022-12-29T04:30:25","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=2203"},"modified":"2022-12-30T09:44:43","modified_gmt":"2022-12-30T04:14:43","slug":"sound","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/sound\/","title":{"rendered":"What is Sound and How is it Produced"},"content":{"rendered":"
What is Sound and How is it Produced<\/h2>\n
\n
Sound<\/strong> is a form of energy that produces the sensation of hearing in our ears. \nFrequency range of audible sound for human is between 20Hz to 20 KHz<\/li>\n
Sound need Material to Travel:<\/strong> You have learnt in previous section that vibrations produce sound. To produce vibrations, we need a material body. Therefore, we can say that a medium is needed for sound to travel. Sound can travel through air (or gases), liquids and solids, but not through vacuum.<\/li>\n
The Time Gap between ‘Seeing’ and ‘Hearing’<\/strong> is due to the difference between the time taken by the light and the sound to travel from the source to the observer.<\/li>\n
The speed of light high 3 \u00d7 108<\/sup>\u00a0meters per second (30 crore metres per second) and the speed of sound in the air under normal conditions is 344 metres per second. So, the light travels almost instantaneously, whereas sound takes some time.<\/li>\n
Sound Wave are Longitudinal Waves:<\/strong> Sound travels through air in the form of longitudinal waves.<\/li>\n<\/ul>\n