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Standard IX
Physics
Application of Ultrasonic Sound
While checkin...
Question
While checking crack in metal using ultrasoind, , why does ultrasound gets deflected from hole or crack and not from solid metal. Define reason behind this
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Q.
Explain how, flaws (or defects) in a metal block can be detected by using ultrasound.
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A calendar shop has 160 calendars. Each rack can hold 8 calendars. How many racks does the store need to use?
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Q.
Assertion
Ultrasound precedes the amniocentesis.
Reason
Foetal viability can be checked by ultrasound.
Q.
(a) What is ultrasound ? What is the difference between ordinary sound and ultrasound ?
(b) Write any three applications (or uses) of ultrasound.
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