The pitch of the sound depends upon

The time a sound wave having frequency 2 KHz and wavelength 35 cm requires to cover the distance of 1.5 Km is

If a normal conversation have sound intensities of 3×10^-6Wm^-2. The intensity of sound for 100dB would be

Frequency of tuning fork depends on

Sound energy passing per second through a unit area held perpendicular to the direction of propagation of sound waves is called

The characteristic of sound by which loud and faint sounds can be distinguished is known as

When the frequency of sound increases, the wavelength and period

People use the silent whistle to call dogs whose frequency lies between

A human hearing can not hear a sound of frequency less than

Sound which has Jarring effect on ears is

If the speed of sound in air is 330 ms^-1 and the wavelength is 10 cm. The frequency of sound should be

The sound produced by a large drum is louder than a small drum because of its

The characteristic of sound by which we can distinguish between a shrill and a grave sound is known as

The sounds which are pleasant to our ears are called

For hearing distinct echoes, the minimum distance of the obstacle from the source of sound must be

When sound is incident on the surface of a medium it bounces back into the first medium. The phenomenon is called

In a market, the intensity level of sound recorded is 80 dB, the intensity level of sound should be

The total distance covered by the sound from the point of generation to the reflecting surface and back should be at least

The loudness of sound is related most closely to its

The SI unit of intensity of sound is

Cats can hear frequencies up to

Echoes maybe heard more than once due to

A ship sends an ultrasound that returns from the seabed and is detected after 3.42 s. If the speed of the ultrasound through seawater is 1300 ms^-1, then the distance of the seabed from the ship would be

Pitch of the sound depends upon

Main sources of noise pollution are

SONAR is the abbreviation of

Old people can not hear sounds even above

Sound waves are

The intensity level of the rustling of leaves is

The speed of sound in solids is