Heat and work are:

Question

Question

This question was previously asked in

JKSSB JE Mechanical 02 Nov 2021 Shift 1 Official Paper

Answer 1

Explanation:

Heat and work, both are path functions; Their magnitude depends on the path followed during a process as well as the end state.

Relationship between heat and work:

Both are recognized at the boundaries of a system as they cross the boundaries; That is, both heat and work are boundary phenomena
Systems possess energy, but not heat or work
Both are associated with a process, not a state; Unlike properties, heat or work has no meaning at a state

Property	Work & Heat
It is a state or point function	They are path functions
They are independent of path history	They are dependent on path history
They are exact differential	They are inexact differential

Important Points

Properties are classified into two types.

Intensive property: The properties of the system which are independent of the mass of a system are called Intensive property.
- E.g. pressure, density, temperature, all specific properties, etc.
Extensive property: The properties of the system which are dependent on the mass of a system are called Extensive property.
- E.g. energy, volume, entropy, etc.