Question

Q2. What is noise pollution?
12
Q3. A body vibrates 100 times in 20 seconds. Calculate the time period of the
vibrating body
12​

Answer 1

Answer:

Noise pollution: it is also known as environmental noise or sound pollution , it is propagation of noise with ranging impact on the activity of human or animal life, most of them harmful to a degree .

Q3 T=1/f =1/100 = 0.01s