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Which one among the following statements is correct?

Options

  1. APressure has magnitude as well as direction
  2. BAs we go deeper in a liquid, the pressure decreases
  3. CAction and reaction forces act on the same object
  4. DPascal and N/m ^2 represent the same unit

Correct answer

D. Pascal and N/m ^2 represent the same unit

Step-by-step solution

Pressure is a scalar quantity, meaning it has magnitude but no specific direction, as it acts equally in all directions at a point in a fluid. As depth in a liquid increases, the pressure increases according to the relation P = P₀ + g h . According to Newton's third law of motion, action and reaction forces always act on two different objects. The SI unit of pressure is defined as force per unit area, which is N/m ^2 . This unit is also known as Pascal (Pa). Therefore, Pascal and N/m ^2 represent the same unit. Ans

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