What is the safe limit of sound level in dB for our ears?
How is loudness of sound related to the intensity of wave producing it?
State one difference between a musical note and a noise.
In what respect does the wave pattern of a noise and a music differ? Draw diagram to explain your answer.
Define the term intensity of a sound wave. State the unit in which it is measured.
Draw a graph between displacement from mean position and time for a body executing free vibrations in vacuum.