PHYSICS [1 Mark Question Answer]

Thrust on a surface is the force acting normally on a surface while pressure on a surface is thrust acting on the unit area of a surface.

Thrust is a vector quantity.

Acid battery hydrometer is used to check the concentration of sulphuric acid in an acid battery.

Pressure is a scalar quantity.

Reading of a barometer would fall if it is taken to a hill as pressure decreases with increase in height.

Reading of a barometer would rise if it is taken to the mine as pressure increases with depth.

The upward force which any liquid exerts upon a body placed in it is called the upthrust.

Pascal's law states that pressure applied to an enclosed liquid, is transmitted equally to every part of the liquid.
Means when pressure is applied at a point in a confined fluid, it is transmitted undiminished and equally in all directions throughout the liquid.

Due to its weight, a fluid exerts pressure in all directions; the pressure exerted by the fluid is called fluid pressure.

A falling barometer indicates the approach of rain or storm or both.

The altimeter is a device which is used in an aircraft to measure its altitude.

Barometer is used for measuring the atmospheric pressure.

Brahma press depends upon Pascal's law.

Pascal's law is principle of hydraulic machines.

Yes, all liquid exert pressure.

Upthrust is defined as the upward force on the object provided by the liquid because the object has displaced some of the fluid.

The density of water decreases with the increase in temperature and increases with decreases in temperature.

Buoyant force act on a body in an upward direction.

Lactometer is commonly used for testing the purity of milk.

The upward force which any liquid exerts upon a body placed in it is called the upthrust. The SI unit of upthrust is N.

Relative density is a pure ratio it has no dimension.

SI unit of weight of the body is N.

SI unit of the buoyant force is N.

No, the relative density of a substance is the ratio of the density of the substance to the density of water at 4°C.

Archimedes’ principle states that “when a body is immersed partially or completely in a fluid (liquid or gas), it experiences an upthrust or buoyant force that is equal to the weight of the fluid displaced by body.”

Thrust is a vector quantity.

The pressure is the physical quantity which is measured in the bar.

The force acting normally on a surface is known as thrust.
SI unit of thrust is N.

The pressure is a scalar physical quantity.

The altimeter is a device which is used in an aircraft to measure its altitude.

Hydraulic machines such as hydraulic press, hydraulic brakes, and hydraulic jacks are applications of pascal's law.

Pascal's law states that the pressure exerted anywhere in a confined liquid is transmitted equally and undiminished in all directions throughout the liquid.

A diving suit is a garment or device designed to protect a diver from the underwater environment.

When diver moves to depth, depth h increases, and thus pressure increases as diver moves to depth.

A substance having a tendency to flow is called fluid.