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प्रश्न
What is meant by supersonic speed?
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उत्तर
Supersonic speed is a rate of travel of an object that exceeds the speed of sound in air.
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संबंधित प्रश्न
A sound wave travels at a speed of 339 m s−1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?
Describe an experiment to show that sound can travel in a solid.
A boy on a hill A fires a gun. The other boy on hill B hears the sound after 4 s. If the speed of sound is 330 m s-1, find the distance between the two hills.
The maximum speed of vibrations which produce audible sound will be in :
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a village
The speed of highly penetrating ultrasonic waves is :
A source of sound is travelling with a velocity 40 km/h towards an observer and emits a sound of frequency 2000 Hz. If the velocity of sound is 1220 km/h, then the apparent frequency heard by the observer is _____.
Air temperature in the Rajasthan desert can reach 46°C. What is the velocity of sound in air at that temperature? (V0= 331 ms–1)
The thunder of cloud is heard 9.8 seconds later than the flash of lightning. If the speed of sound in air is 330 ms–1, what will be the height of the cloud?
Assertion: The speed of sound in air is less than the speed of sound in solid.
Reason: If we increase the temperature of medium, the speed of sound increases in any medium.
