Write the answers in your own words.(a) What is meant by vibration ?(b) Explain with the help of practical examples how sound is propagated through solids.(c) What is meant by noise pollution?(d) What measures will you take to control noise pollution ?

Write the answers in your own words.(a) What is meant by vibration ?(b

1.	Write the answers in your own words.(a) What is meant by vibration ?(b) Explain with the help of practical examples how sound is propagated through solids.(c) What is meant by noise pollution?(d) What measures will you take to control noise pollution ?
Answer» Write the answers in your own words. (a) What is meant by vibration ? (b) Explain with the help of practical examples how sound is propagated through solids. (c) What is meant by noise pollution? (d) What measures will you take to control noise pollution ?