Which of the following statements about a fluid at rest in a cup is/are correct? 1. Pressure is same at all the points in the fluid. 2. Pressure is exerted on the walls. 3. Pressure exists everywhere in the fluid. Select the correct answer using the code given below :

In fluid statics, pressure is not uniform throughout the entire volume. According to the hydrostatic pressure formula P=ρgh, pressure increases linearly with depth due to the weight of the fluid above [1]. Therefore, statement 1 is incorrect as pressure varies vertically, though it remains the same at all points within a horizontal plane. Statement 2 is correct because fluids exert force on all parts of the container in contact with them, including the side walls [2]. Statement 3 is also correct; pressure exists everywhere within the fluid because molecules are free to move and transmit pressure to all portions of the fluid and the container walls [3]. At any specific point, this pressure acts equally in all directions to maintain static equilibrium. Thus, only statements 2 and 3 are accurate descriptions of a fluid at rest.

Sources

1. [1] https://www.sciencedirect.com/topics/computer-science/exerted-pressure
2. [2] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 6: Pressure, Winds, Storms, and Cyclones > Activity 6.2: Let us find out > p. 85
3. [3] Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 6: Pressure, Winds, Storms, and Cyclones > Snapshots > p. 94