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FULL MARKS-SOUND-ADDITIONAL QUESTIONS (Answer the following questions)
- "Sound needs a medium for propagation". Justify with an experiment.
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- Name the characteristics that describe a sound.
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- What does the intensity of sound heard at a place depend on?
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- Why is sound wave called longitudinal wave?
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- What is sound and how is it produced?
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- How can two whales in the sea, hundreds of kilometers apart, communica...
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- What is a stethescope? What is the principle on which it works?
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- What is an ECG? How does it help in the field of medicine?
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