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प्रश्न
Fill in the blank and explain.
The incidence of ______ in daily life shows that the velocity of sound is less than the velocity of light.
उत्तर
The incidence of thunderstorms in daily life shows that the velocity of sound is less than the velocity of light.
Explanation:
Because light travels faster than sound.
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संबंधित प्रश्न
A sound wave travels at a speed of 339 m s−1. If its wavelength is 1.5 cm, what is the frequency of the wave? Will it be audible?
A stone is dropped from the top of a tower 500 m high into a pond of water at the base of the tower. When is the splash heard at the top? Given, g = 10 m s−2 and speed of sound = 340 m s−1.
Fill in the blank.
Sound travels faster in ________ than in liquids.
Select the correct alternative :
The speed of sound in water is
During a thunderstorm, the sound of a thunder is heard after the lightning is seen. Why?
Can sound travel through solids and liquids ? In which of these two does it travel faster ?
If you want to hear a train approaching from far away, why is it more convenient to put the ear to the track?
Calculate the speed of a sound wave whose frequency is 2 kHz and wavelength 65 cm.
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?
When we put our ear to a railway line, we can hear the sound of an approaching train even when the train is far off but its sound cannot be heard through the air. Why?
Fill in the blank with suitable word :
The speed of sound in a solid is ............... than the speed of sound in air.
The maximum speed of vibrations which produce audible sound will be in :
The speed of highly penetrating ultrasonic waves is :
The speed of sound in air at 0°C is 332 m/s. If it increases at the rate of 0.6 m/s per degree, what will be the temperature when the velocity has increased to 344 m/s?
Helium gas is filled in two identical bottles A and B. The mass of the gas in the two bottles is 10 gm and 40 gm respectively. If the speed of sound is the same in both bottles, what conclusions will you draw?
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?
Air temperature in the Rajasthan desert can reach 46°C. What is the velocity of sound in air at that temperature? (V0= 331 ms–1)
The velocity of sound by a tuning fork frequency of 480 Hz is 340 ms Its wavelength is ______.
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?
