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Q.

Is it true that ultrasound is implemented for detecting flaws in metal blocks?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
Ultrasound is implemented to detect internal cracks or flaws inside metal blocks. The cracks are detected by passing ultrasound waves through one face of a metal block. The ultrasound waves are not passed through the internal cracks, so the wave is interrupted. The ultrasound detectors in front of the opposite face of the block detect the crack inside the metal block.
   
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