Question

Work is a

a) point function

b) path function

c) depends on the state

d) none of the mentioned

Answer 1

Ans :-    path function

• First we have to the concept of path ,point or state functions
• In simple way that I was explained as below,

State function or point function :

• State function or point function is one which depends on the particular state only .
• It does not explain how it reaches that state.
• Example:- Temperature, enthalpy, entropy …etc

path function :

• Path function is the physical quantity whose values depend on the transition or proces of a system from the initial to the final state.
• And it explains how it reached that state.
• Examples:- Heat and Work.

Comment :

As we know that work is proposional to the distance ,means that it depends on the path used reach its final state, that’s why work can not be state function ….ok

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