Advertisements
Advertisements
प्रश्न
What name is given to those aircrafts which fly at speeds greater than the speed of sound?
Advertisements
उत्तर
Supersonic aircraft are aircraft that fly at speeds greater than the speed of sound.
APPEARS IN
संबंधित प्रश्न
Fill in the blank.
Sound travels faster in ________ than in liquids.
If you want to hear a train approaching from far away, why is it more convenient to put the ear to the track?
A worker lives at a distance of 1.32 km from the factory. If the speed of sound in air be 330 m/s, how much time will the sound of factory siren take to reach the worker?
Fill in the blanks with suitable words .
Wave speed in metres per second equals frequency in ............ multiplied by ..................... in ..................
The maximum speed of vibrations which produce audible sound will be in :
Sunil is standing between two walls. The wall closest to him is at a distance of 660 m. If he shouts, he hears the first echo after 4 s and another after another 2 seconds.
- What is the velocity of sound in air?
- What is the distance between the two walls?
Velocity of sound in the atmosphere of a planet is 500 ms–1. The minimum distance between the sources of sound and the obstacle to hear the echo should be
Establish the relationship between the speed of sound, its wavelength and frequency. If the velocity of sound in air is 340 m s–1, calculate
(i) wavelength when the frequency is 256 Hz.
(ii) frequency when the wavelength is 0.85 m
On which factors does the speed of sound in the solid medium depend?
Numerical problems:
Two persons are at opposite ends of a steel rod. One strikes the end of the rod with a stone. Find the ratio of time taken by the sound wave in the air and in steel to reach the second person. (Sound of speed in steel = 5960 ms-1, Sound of speed in air = 344 ms-1).
