Question

21. Explain how defects in a metal block can be detected using ultrasound.
Please answer in short...........​

Answer 1

What will be its population after 2 years?

8)The price of a teaset is increased by 5%. If the increased price is 441, what is its

Answer 2

❣Answer of ur question❣

✳Ultrasounds can be used to detect cracks and flaws in  metal blocks.

✳Ultrasonic waves are allowed to pass through the metallic block and detectors are used to detect the transmitted waves.

✳If there is even a small defect, the ultrasound gets reflected back indicating the presence of the flaw or defect.