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प्रश्न
Complete the following sentence:
Bats can produce and hear ___________ sound.
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उत्तर
Bats can produce and hear ultrasonic sound.
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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
Name the sound of the frequency given below:
1000 Hz
Can you hear the sound produced due to vibrations of a seconds pendulum? Give reasons.
A man can hear the sound of frequency :
The properties of ultrasound that make it useful are
Sonar makes use of :
What do you understand by the term infrasonic vibrations?
What is Galton’s whistle? To what use is it put?
What are ultrasonic? State and explain two applications of ultrasounds.
