सुपरसॉनिक स्पीड मापने का य – McqOptions

MCQOPTIONS

1.	सुपरसॉनिक स्पीड मापने का यूनिट क्या है -
A.	मैक
B.	नॉट
C.	रिक्टर
D.	हर्टज
Answer» B. नॉट

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