What happens to the velocity of the supersonic flow in the convergent duct?

What happens to the velocity of the supersonic flow in the convergent duct? Correct Answer Decreases

Since the supersonic flows have Mach number greater than 1, the value of M2-1 is positive. According to the area-velocity relation, for a convergent duct in which dA is negative, the velocity decreases.
Bissoy MCQ

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