1.

Write answers the following questions.(a) Why do we hear musical notes when the strings of a sitar are plucked?(b) How does a bat find its way in the dark?(c) What is the sonar system based on?(d) Why is the sound of a bell smothered when a hand is placed on it?

Answer»

Write answers the following questions.



(a) Why do we hear musical notes when the strings of a sitar are plucked?



(b) How does a bat find its way in the dark?



(c) What is the sonar system based on?



(d) Why is the sound of a bell smothered when a hand is placed on it?



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