Advertisements
Advertisements
प्रश्न
Which of the following is the speed of sound in copper and which in aluminium?
(a) 5100 m/s
(b) 1500 m/s
(c) 3750 m/s
Advertisements
उत्तर
(a) Speed of sound in copper νcopper = 3,750 m/s.
(b) Speed of sound in aluminium νaluminium = 5,100 m/s.
APPEARS IN
संबंधित प्रश्न
In which of the three media, air, water or iron, does sound travel the fastest at a particular temperature?
Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why?
Fill in the blank.
Sound travels faster in ________ than in liquids.
Describe an experiment to show that sound can travel in a solid.
What is meant by supersonic speed?
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a city
The drawing shows a ship 800 m from a cliff. A gun is fixed on the ship. After 5 seconds the people at the front of the ship hear the sound of the gun again.
(a) What is the name of this effect ?
(b) What happens to the sound at the cliff ?
(c) How far does the sound travel in 5 seconds ?
(d) Calculate the speed of sound.
Hydrogen gas is filled in two identical bottles, A and B, at the same temperature. The mass of hydrogen in the two bottles is 12 gm and 48 gm respectively. In which bottle will sound travel faster? How many times be as fast as the other?
Why does the flash of lighting reach earlier than the sound of thunder?
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)
