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[A] : Ultrasound (in sonography ) is th...

[A] : Ultrasound (in sonography ) is the sound beyond the range of human hearing
[R] : Vibrations crysalts is the source of ultra-sound

A

If both A and R are true and R is the correct explanation of A

B

If both A and R are true but R is not the correct explanation of A

C

If A is true and R is false

D

If both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
B
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