Sound Test - 6...

Pitch of a voice refers to the

If two men talk on the moon's surface,

On which of the following phenomena do bats rely the most to find their way in the dark?

What are ultrasonic waves?

The velocity of sound in air at 0^oC is

Which of the following statements is wrong?

The distance between two successive crests or trough is 1 m, and the velocity of the waves is 320 m/s. Find out the frequency.

A body is vibrating 6,000 times in one minute. If the velocity of sound in air is 360 m/s, find the wavelength of waves produced.

If the period of small ripples in water is 0.1 s, and their wavelength is 5 cm, what is the speed of the wave?

Waves of frequency 100 Hz are produced in a string as shown below. What will be the velocity of the wave?

Two sound waves in the air have their wavelength in the ratio 2:5. The ratio of their frequency is

Study the following graphs to identify the statement that is correct.

A person who is standing between two cliffs shouts and hears the first two echoes after 4 s and 6 s, respectively. What is the distance between the cliffs if the velocity of sound is 320 m/s?

Normal conversation has intensity of about

The intensity I of sound waves at a point from the vibrating body varies with distance as

A source of wave produces 40 crests and 40 troughs in 0.6 seconds.

The frequency of the wave is

If the frequency of a tuning fork is 200 Hz and the velocity of sound in air is 320 m/s, the distance travelled by the sound while the fork completes 10 vibrations, is

Waves formed over water surface are

The time period of Khushi`s voice is 0.002 sec. Frequency of her voice is

Frequency of vibration of a sitar is 200 Hz. The time period is