Advertisements
Advertisements
प्रश्न
Write the approximate speed of sound in water .
उत्तर
Medium - Liquid (Water) Speed of sound - 1500 `"m s"^-1`
APPEARS IN
संबंधित प्रश्न
Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why?
Two children are at opposite ends of an aluminium rod. One strikes the end of the rod with a stone. Find the ratio of times taken by the sound wave in air and in aluminium to reach the second child.
A cricket ball is seen to hit the bat first and the sound of hitting is heard a little later. Why?
Calculate the speed of a sound wave whose frequency is 2 kHz and wavelength 65 cm.
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?
Numerical problem.
A stone is dropped from the top of a tower 750 m high into a pond of water at the base of the tower. Calculate the number of seconds for the splash to be heard? (Given g = 10 m s–2 and speed of sound = 340 m s–1)
The speed of sound in a gaseous medium depends on the nature of the gas.
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).