Question Bank

What is the SI unit of frequency of sound waves?

Sound waves in air are characterized as which type of waves?

What is the approximate speed of sound in air at 0 degree Celsius?

In which of the following media does sound travel the fastest?

What is the audible frequency range for a healthy human ear?

Which property of sound determines its pitch?

The loudness of sound is directly proportional to the square of its what?

What is the minimum distance required between a source and a reflector to hear a distinct echo in air at 20 degrees Celsius?

Sound cannot travel through which of the following?

If the frequency of a sound wave is 500 Hz and its speed is 340 m/s, what is its wavelength?

What happens to the speed of sound in air as the temperature increases?

Sounds with frequencies below 20 Hz are called what?

Which device is used by bats to navigate and find food?

What is the relationship between the time period (T) and frequency (f) of a wave?

A persistence of sound after the source has stopped, caused by multiple reflections, is known as what?

How much does the speed of sound increase for every 1 degree Celsius rise in temperature near room temperature?

Which of the following determines the quality (timbre) of a sound?

The distance between two consecutive compressions in a longitudinal wave is called what?

Which part of the human ear converts sound vibrations into electrical signals?

If a sound wave travels from air into water, which property remains unchanged?