- A wave vibrates up and down two times in 0.4s and it covers a distance of 4m during this interval.calculate: a)frequency b)Time period of the wave by drawing suitable graph.
- Draw a suitable graph of a wave.Mark on it the amplitude of wave and wavelength of wave.
- What do you mean by the characteristics of sound?
- Roaring lion & buzzing mosquito both produces sound.which sound will travel faster? Justify your answer.
- Why is the sound produced in air, not heard by a person deep inside the water?
- Why is it possible to detect the approaching of a distant train by placing the ear very close to the railway line?
- What type of hearing aids are required to the astronauts on the moon and why?
- If a person strikes at the the one end of a long iron tube and the listener places his ear at a very far distance on the other end.He hears the sound of striking two times,why?
- Why can we not hear each other on the moon?
- Explain, why a distant lightning flash is seen before the thunder is heard.
- If a person sets his watch by the sound of a distant siren at 8.00 AM , will it go fast or slow and why?
- Draw a sketch of the variation of the displacement with time for a sinusoidal wave motion and mark amplitude, wavelength, time period on it.
- Distinguish between two musical sounds produced by two different instrument of equally loud & of same pitch.Draw a suitable graph showing notes.
Sunday, 3 November 2019
Assignment based on sound
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