Audible and Inaudible Sounds

What is the human audible range?

Which of the following is an application of ultrasound?

One of the following can hear infrasound. This one is -

Which of the following is an application of ultrasound?

The frequency, which is audible to the human ear is -

Select the sound wave used in SONAR.

The limit of audibility is

Ultrasonic waves gets _____ if there is a flaw or cracks in a metal body.

For human ear, the range of audible frequencies is roughly from:

Sounds of frequencies less than about ______ vibrations per second cannot be detected by the human ear.

Ultrasonic waves are made to reflect from various parts of the heart and form the image of the heart. This technique is called ____________________.

Ultrasound is _______________ back from the defective locations inside a metal block.

Which of these use the ultrasound range?

Sounds of frequencies below $20 \mathrm{Hz}$ are called ____________ sound.

The frequency which is not audible to the human ear is:

The human ear can hear sounds having frequency in range:

Bats detect the obstacles in their path by receiving the reflected ______.