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R G PUBLICATION-SOUND-EXAMPLE
- Two children are at opposite ends of an aluminium rod. One strikes the...
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- The frequency of a source of sound is 100 Hz. How money times does it ...
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- Does sound follow the same laws of reflection as light does? Explain?
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- When a sound is reflected from a distant object, an echo is produced. ...
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- Give two practical applications of reflection of sound waves.
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- A stone is dropped from the top of a tower 500 m high into a pond of w...
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- A sound wave travels at a speed of 339 m s^-1. If its wavelength is 1....
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- What is reverberation? How can it be reduced?
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- What is loudness of sound? What factors does it depend on?
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- Explain how bats use ultrasound to catch a prey.
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- How is ultrasound used for cleaning?
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- Explain how defects in a metal block can be detected using ultrasound.
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- A sonar device on a submarine sends out a signal and receives an echo ...
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- Explain how defects in a metal block can be detected using ultrasound.
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- Explain how the human ear works.
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- A body vibrates 10 times per second. The time period of the body is
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- Choose the wrong statement-
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- The frequencies and velocities of two waves are equal. If wavelengths ...
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- The distance between two consecutive compressions (c ) or two consecut...
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- At the place of compession
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