Advertisements
Advertisements
Question
Fill in the blank and explain.
The velocity of sound in steel is ______ than the velocity of sound in water.
Advertisements
Solution
The velocity of sound in steel is greater than the velocity of sound in water.
Explanation:
Speed of sound refers to the speed of sound waves travelling in air which is different in different mediums. It travels the slowest in gases, a little faster in liquids, and the fastest in solids. The higher the density of the medium, the faster will be the speed of sound and vice versa. Thus, steel being solid and water being liquid, sound speed in steel is more than sound speed in water.
APPEARS IN
RELATED QUESTIONS
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.
Write true or false for a given statement.
Sound can travel in a vacuum.
Describe an experiment to show that sound can travel in a solid.
Write the approximate speed of sound in air.
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.
What is the speed of sound :
(a) in air?
(b) in water?
(c) in iron?
Calculate the frequency of a wave whose time-period is 0.02 s.
Calculate the speed of a sound wave whose frequency is 2 kHz and wavelength 65 cm.
A sound signal of 128 vibrations per second has a wavelength of 2.7 m. Calculate the speed with which the wave travels.
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?
The speed of highly penetrating ultrasonic waves is :
The velocity of sound in solid is ______ than the velocity of sound in air.
The velocity of sound in air at a particular temperature is 330 ms–1. What will be its value when temperature is doubled and the pressure is halved?
The velocity of sound is independent of temperature.
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?
An ultrasonic wave is sent from a ship towards the bottom of the sea. It is found that the time interval between the transmission and reception of the wave is 1.6 seconds. What is the depth of the sea, if the velocity of sound in the seawater is 1400 ms–1?
When temperature increases the speed of sound ______.
On which factors does the speed of sound in the gaseous medium depend?
On which factors does the speed of sound in the solid medium depend?
Numerical problems:
A Sound wave travels at a speed of 344 ms-1. If the wavelength is 1.5 cm, what is the frequency of the Wave? Will it be audible?
