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Sound Propagation

Physics ⇒ Waves and Sound

Sound Propagation starts at 7 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Sound Propagation. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 10
A person shouts near a cliff and hears the echo after 2 seconds. If the speed of sound in air is 340 m/s, how far is the cliff from the person?
A sound wave has a frequency of 500 Hz and a wavelength of 0.68 m. What is the speed of sound in the medium?
A sound wave travels 660 meters in 2 seconds. What is its speed?
Describe the process of sound propagation in solids.
Describe what happens to the speed of sound as the temperature of air increases.
Explain why astronauts cannot talk to each other on the Moon without radios.
Explain why sound travels faster in solids than in gases.
Explain why sound waves are called mechanical waves.
If the distance between a source of sound and a listener is doubled, what happens to the time taken for sound to reach the listener?
If the speed of sound in air is 340 m/s, how long will it take for sound to travel 1700 meters?
The time interval between a sound and its echo is 0.5 seconds. If the speed of sound is 340 m/s, what is the distance to the reflecting surface?
What is the main reason why sound cannot travel through a vacuum?
A sound wave has a wavelength of 2 m and travels at a speed of 340 m/s. What is its frequency?
A submarine emits a sonar pulse that travels through seawater (speed of sound = 1500 m/s) and reflects off an object. If the echo is received 4 seconds after emission, how far is the object from the submarine?
A train is approaching a tunnel. The driver sounds the horn and hears the echo after 0.8 seconds. If the speed of sound in air is 340 m/s, how far is the train from the tunnel entrance?
Explain how the density and elasticity of a medium affect the speed of sound propagation through it.
If the frequency of a sound wave is doubled while its speed remains constant, what happens to its wavelength?
Sound travels through a steel rod at 5000 m/s. If a sound pulse takes 0.02 seconds to travel from one end of the rod to the other, what is the length of the rod?
When a sound wave passes from air into water, what happens to its wavelength if the frequency remains constant?