Question : Which of the following statements is/are not correct?
I. Force per unit volume is called pressure.
II. Liquids can exert pressure on the walls of containers.
III. Force acting on an object can cause a change in its state of motion but not its shape.
Option 1: Only I and II
Option 2: Only III
Option 3: I, II and III
Option 4: Only I and III
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Correct Answer: Only I and III
Solution : The correct answer is Only I and III.
Pressure is defined as the force exerted on the surface of objects per unit area. The first statement given in the question is incorrect.
Liquids can exert pressure on the walls of the containers. This statement is correct.
Force changes the shape and size of an object without any change in the state of motion of the object. The third statement given in the question is incorrect.
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