CBSE Class 9 Answered
Sound is a form of energy.We know that energy can neither be created nor be destroyed but we can produce sound by using our throat. How is this possible?
Asked by padmarajhombannavar | 04 Aug, 2019, 03:51: PM
Expert Answer
When we speak, or generating sound using throat, we spend energy.
You speak continuosly for an hour , if possible, then you will feel that you are spending energy for producing sound.
we can see that when a person is weak, he may not able to speak loudly
Answered by Thiyagarajan K | 04 Aug, 2019, 04:24: PM
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