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प्रश्न
What does SONAR stand for? Where do we make use of SONAR?
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उत्तर
SONAR stands for Sound Navigation and Ranging. Sonar helps the oceanographers and ship captains to determine the depth of the ocean.
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संबंधित प्रश्न
A microphone is connected to the Y-input of a C.R.O Three different sounds are made in turn in front of the microphone. Their traces (a), (b) and (c) produces on the screen are shown in following figure.
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| (a) | (b) | (c) |
- Which trace is due to the loudest sound? Give reason for your answer.
- Which trace is due for the sound with the lowest pitch? Explain your answer.
Name the sound of the frequency given below:
10 Hz
The properties of ultrasound that make it useful are
What do you understand by the term ultrasonic vibrations?
Name three animals which can hear ultrasonic vibrations.
How do bats locate their prey during a flight?
What is Galton’s whistle? To what use is it put?
State four practical uses of ultrasonic vibrations.
Does SONAR make use of infrasonic sound?
State the properties of ultrasound that make it useful.
