निम्नलिखित बलों पर विचार कीजिए: (A) पेशीय बल (Muscular force) (B) चुंबकीय बल (Magnetic force) (C) घर्षण बल (Frictional force) (D) गुरुत्वाकर्षण बल (Gravitational force) (E) स्थिरवैद्युत बल (Electrostatic force) उपरोक्त में से कौन से असंपर्क बल (non-contact forces) हैं?

Which of the following statements is/are NOT correct? I. Force per unit volume is defined as pressure. II. Liquids exert pressure on the walls of their container. III. A force acting on an object can change its state of motion but can never alter its shape.

The effect of thrust on a surface depends on the area on which it acts. Force acting on a smaller area exerts a ___________ compared to a larger area.