Your parents are going to buy a house. They have been offered one on the
roadside and another three lanes away from the roadside. Which house
would you suggest your parents should buy? Explain your answer.
Identify the part which vibrates to produce sound in the following
instruments.
(a) Dholak (b) Sitar (c) Flute
The sound from a mosquito is produced when it vibrates its wings at an
average rate of 500 vibrations per second. What is the time period of the
vibration?
Fill in the blanks with suitable words.
(a) Time taken by an object to complete one oscillation is called
__________.
(b) Loudness is determined by the __________ of vibration.
(c) The unit of frequency is __________
(d) Unwanted sound is called __________ .
(e) Shrillness of a sound is determined by the __________ of vibration.
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