Speed of Sound

Physics ⇒ Waves and Sound

Speed of Sound starts at 8 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Speed of Sound. 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 11

A person hears thunder 5 seconds after seeing lightning. If the speed of sound is 340 m/s, how far away is the lightning?

A sound wave has a wavelength of 2 meters and a frequency of 170 Hz. What is the speed of sound?

A sound wave takes 0.2 seconds to travel between two points 68.6 meters apart. What is the speed of sound?

A sound wave travels 1500 meters in 5 seconds. What is the speed of sound in this medium?

A sound wave travels at 330 m/s in air. If the frequency is 440 Hz, what is the wavelength?

A submarine uses sonar to detect an object underwater. If the speed of sound in seawater is 1500 m/s and the echo returns in 2 seconds, how far away is the object?

Describe how temperature affects the speed of sound in air.

Describe the effect of pressure on the speed of sound in air at constant temperature.

Does sound travel faster in humid air or dry air?

Explain why sound cannot travel through a vacuum.

Explain why sound travels faster in helium than in air.

Explain why the speed of sound is greater in water than in air.

If the speed of sound in a gas is given by v = √(γRT/M), what does each symbol represent?

If the speed of sound in air is 343 m/s and a sound wave has a frequency of 686 Hz, what is its wavelength?

State the relationship between the speed of sound, frequency, and wavelength.

The formula for the speed of sound in air as a function of temperature is v = 331 + 0.6T, where T is in °C. What is the speed of sound at 20°C?