Advertisements
Advertisements
Question
During a thunderstorm, the sound of a thunder is heard after the lightning is seen. Why?
Solution
The velocity of light is 3 × 108 m/s-1 whereas velocity of sound is 332 m/s-1. First we see the flash of light and then we hear the thunder.
As a result, lightning appears first and thunder follows. The thunderstorm may be far from us if there is simply lightning and no thunder.
APPEARS IN
RELATED QUESTIONS
Describe an experiment to show that sound can travel in a solid.
A sound signal of 128 vibrations per second has a wavelength of 2.7 m. Calculate the speed with which the wave travels.
Fill in the blank with suitable word :
The speed of sound in a solid is ............... than the speed of sound in air.
Fill in the blank and explain.
The velocity of sound in steel is ______ than the velocity of sound in water.
Why does the flash of lighting reach earlier than the sound of thunder?
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
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?
A strong sound signal is sent from a ship towards the bottom of the sea. It is received back after 1s. What is the depth of sea given that the speed of sound in water 1450 ms–1?
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.
On which factors does the speed of sound in the gaseous medium depend?
