Science

Sound

Question:

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?

Answer:

The time required to complete one oscillation is known as time period. It is given by the inverse of the frequency. Time period = 1/(Frequency of Oscillation) Frequency of oscillations = 500 Hz Time period = 1/500 = .002 s
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Questions and Answers

Sound

Q 1.

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 wouid you suggest your parents should buy? Explain your answer.
Answer

Q 2.

What is the difference between noise and music? Can music become noise sometimes?
Answer

Q 3.

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?
Answer

Q 4.

Explain in what way noise pollution is harmful to humans.
Answer

Q 5.

List sources of noise pollution in your surroundings.
Answer

Q 6.

A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency.
Answer

Q 7.

Sketch larynx and explain its function in your own words.
Answer

Q 8.

Identify the part which vibrates to produce sound in the following instruments.(a) Dholak (b) Sitar (c) Flute
Answer