Question

The force acting on a unit area of a surface is called

• A. magnitude
• B. friction
• C. temperature
• D. pressure

Answer 1

The correct option is (C):

Explanation of the correct option:

1. The force acting per unit area in a system is called the pressure in the system.
   
2. It depends on the particular area in which pressure occurs.

Explanation of the incorrect options:

Option (A):

1. ​The changes that occur in the body due to heat is called the temperature.
   
2. Temperature can be considered as the measure of heat.

Option (B):

1. Magnitude is the value of a specific physical quantity. ​

Option (D):

1. Friction is the ​opposing force that acts on a body in which force is applied.
   
2. It occurs mainly during the movement of the body.
   

Final Answer: The force acting on a unit area of a surface is called pressure.