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MBD -HARYANA BOARD-SOUND-EXAMPLE
- The number of oscillations per second is called ………… .
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- We can respond respond to the frequency of sound more than ……….. Hertz...
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- Name the section of throat in which the human voice is produced.
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- Name three characteristics of sound.
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- What is the audible range of the average human ear ?
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- Define the term pitch.
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- Which sound has higher frequency? Sound produced by a buzzing mosquito...
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- Write the following frequencies in their increasing order: Voice of a...
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- How do we hear sound?
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- What is length of vocal cords in man?
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- Which term is used to refer to unpleasant sounds ?
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- How sound is produced in Musical Instruments?
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- What is the unit of loudness?
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- Name an instrument with pleasant sound.
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- What is hearing impairment?
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- What are causes of hearing impairment?
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- Give an example of loud noise.
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- At which unit, sound becomnes harmful?
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- Which of these sources would cause the most noise pollution ?
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- Which natural organism is important to reduce noise pollutioon?
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