Advertisements
Advertisements
प्रश्न
Explain how defects in a metal block can be detected using ultrasound.
Advertisements
उत्तर
Ultrasounds can be used to detect cracks and flaws in metal blocks. Metallic components are generally used in the construction of big structures like buildings, bridges, machines and also scientific equipment. The cracks or holes inside the metal blocks, which are invisible from the outside, reduce the strength of the structure. Ultrasonic waves are allowed to pass through the metal block, and detectors are used to detect the transmitted waves. If there is even a small defect, the ultrasound gets reflected, indicating the presence of the flaw or defect.
संबंधित प्रश्न
Give two practical applications of reflection of sound waves.
How is ultrasound used for cleaning?
Name the characteristic of sound which depends on (a) amplitude (b) frequency, and (c) waveform.
What is the name of the device which is used to find the depth of sea (or ocean) by using ultrasonic sound waves ?
What happens to the pitch of a sound if its frequency increases ?
Fill in the blank with suitable word :
Loudness of sound depends on .....................
Fill in the blank with suitable word :
Quality of sound depends on ........................
Explain the term 'pitch' of a sound. On what factor does the 'pitch' of a sound depend ?
Explain how, flaws (or defects) in a metal block can be detected by using ultrasound.
Define the following terms : (a) Echolocation (b) Echocardiography, and (c) Ultrasonography.
