Question

Pressure in liquids is transmitted equally in all directions. This is stated by

• A. Archimedes' principle
• B. Newton's law
• C. Gravitational law
• D. Pascal 's law

Answer 1

The correct option is D

Pascal 's law

The explanation for the correct option:

Option (D):

1. Pascal's principle (also known as Pascal's law) states that when a change in pressure is applied to an enclosed fluid.
2. It is transmitted equally to all parts of the fluid as well as the container's walls.
3. Because the atoms of fluid are free to move around in an enclosed fluid, they transmit pressure to all parts of the fluid as well as the container's walls.
4. Any pressure change is transmitted unequally.

The explanation for incorrect options:

Option (A):

1. The upward buoyant force exerted on a body immersed in a fluid, whether partially or completely submerged, is equal to the weight of the fluid displaced by the body and acts in the upward direction at the centre of mass of the displaced fluid.
2. The volume of displaced fluid is the volume of an object fully immersed in a fluid or the fraction of the volume below the surface of an object partially submerged in a liquid.

Option (B):

1. According to the first law, an object's motion will not change unless a force acts on it.
2. According to the second law, the force acting on an object is equal to its mass multiplied by its acceleration.
3. When two objects interact, they apply forces of equal magnitude and opposite directions to each other, according to the third law.

Option (C):

1. Newton's law of gravitation states that any particle of matter in the universe attracts another with a force that varies directly as the product of their masses and inversely as the square of their distance.
2. It is given by, $F_g=\frac{G{m}_1{m}_2}{r^2}$.
3. Where, $F_g=$gravitational force, $G=$universal gravitational constant $(6.67\times {10}^{-11}N{m}^{2}k{g}^{-2})$, $m_1$and $m_2$ are the masses and, $r$ is the distance between the masses.

Hence, Pressure in liquids is transmitted equally in all directions. This is stated by Pascal's law.

Thus, the correct answer is option (D).