Question

We use ___sound to identify the crack in large stone before using them in building
Above 10000Hz
below 20Hz
Above 20000Hz
below 20000Hz​

Answer 1

Answer:

Mark brainlist

Explanation:

Ultrasound

below 20hz

Answer 2

Answer:

• Above 20000 Hz is the required answer

Explanation:

We use Above 20000Hz sound to identify the crack in large stone before using them in building .

Additional Information !!

• Ultrasonic Sound wave is used to detect the cracks in building .

• The frequency of sound waves more than 20Khz is considered as ultrasonic sound wave .

• Ultrasound is used in medical field as well . It is used to break stones in the kidneys .

• It is used to detect defects in some parts of the body .