Question

Pressure is the amount of force applied at right angles to the surface of an object per unit area.
The symbol for it is p or P.
Mathematically:
P=F/A
where:
P is the pressure,
F is the magnitude of the normal force,
A is the area of the surface on contact.
Pressure is a scalar quantity. It relates the vector area element (a vector normal to the surface) with
the normal force acting on it. The pressure is the scalar proportionality constant that relates the 
two normal vectors: Units The SI unit for pressure is the Pascal (Pa), equal to one Newton per square meter (N/m2, or kg·m−1·s−2). This name for the unit was added in 1971; before that, pressure in SI was expresd simply in Newton’s per square meter. Other units of pressure, such as pounds per square inch (Ibf/in2)  and bar, are also in common use. The CGS unit of pressure is the barye (Ba), equal to 1 dyn·cm−2, or       0.1 Pa. Pressure is sometimes expressed in grams-force or kilograms-force per square centimeter (g/cm2 or kg/cm2) and the like without properly identifying the force units. But using the names kilogram, gram, kilogram-force, or gram-force (or their symbols) as units of force is expressly forbidden in SI. The technical atmosphere (symbol: at) is 1 kgf/cm2 (98.0665 kPa, 
or 14.223 psi). . Pressure may also be  expressed in terms of standard atmospheric pressure; the atmosphere (atm) is equal to this pressure, and the torr is defined as 1⁄760 of this. Manometric units 
such as the centimeter of water, millimeter, and inch of mercury are used to express pressures in 
terms of the height. Since a system under pressure has the potential to perform work on its surroundings, pressure is a measure of potential energy stored per unit volume. It is therefore related to energy density and may be expressed in units such as joules per cubic meter (J/m3, which is equal to Pa).

Q.no. 4(a) Will air pressure be higher on top of a mountain or on the beach?



On Beach

On Mountain

Same on both

Can't say


Q.no. 4(b) Formula of Pressure is-



P=F/A

P=A/F

F=P/A

None of these



Q.no. 4(c) One pascal is equal to 



One Newton per square meter 

Two Newton per square meter 

One Newton per square centimeter 

Two Newton per square milimeter 


Q.no. 4(d) Pressure is a scalar quantity-

Yes

No



Q.no. 4(e) Pressure is exerted in -



Solids

Liquids

Gases

All of them​

Answer 1

Answer:

all of the them is the right anser