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MBD -HARYANA BOARD-SOUND-EXAMPLE
- 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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- What is noise pollution ?
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- Define the term time period, frequency and amplitude.
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- One astronut speaks with another astronaut on Moon. Can the other astr...
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- The voice of a lion is different from that of a mosquito because
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- Explain with simple experiment to show that sound propagates through s...
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- How is the human voice produced?
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- What is ultrasound ? Describe some of its practical applications ?
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- state any three uses of ultrasonic sound.
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- A boy claps his hands in front of stair-case and hears a musical sound...
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- What is noise ? What is its unit?
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- What is the difference between noise and music? Can music become noise...
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- A child with hearing impairment
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- Indentify the part which vibrates to produce sound in the following in...
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