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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
The sketches I to IV in following Figure show sound waves, all formed in the same time interval.
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| I | II |
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| III | IV |
Which diagram shows
- a note from a musical instrument
- a soft (or feeble) note,
- a bass (low frequency) note.
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
Name the sound of the frequency given below:
100 Hz
Name the sound of the frequency given below:
40 kHz
Explain how do bats locate the obstacles and prey in their way.
What is Galton’s whistle? To what use is it put?
What are ultrasonic?
Ultrasound has frequency of vibration
Bats produce ______ sound during screaming.
