Question

When a System is taken from State $i$ to State $f$ along the path iaf, it is found that $\mathrm{Q}=70 \mathrm{cal}$ and $\mathrm{w}=30 \mathrm{cal}$, along the path ibf. $\mathrm{Q}=52$ cal. $\mathrm{W}$ along the path ibf is (A) 6 cal (B) $12 \mathrm{cal}$ (C) $24 \mathrm{cal}$ (D) 8 cal

Name: Problem 1124, Chapter 8: JEE Physics
Uploaded: 2021-09-30T12:46:04-08:00
Duration: 2 min 42 s
Channel: Sachin Rao
Description: When a System is taken from State i to State f along the path iaf, it is found that Q=70 cal and w=30 cal, along the path ibf. Q=52 cal. W along the path ibf is (A) 6 cal (B) 12 cal (C) 24 cal (D) 8 cal

   When a System is taken from State $i$ to State $f$ along the path iaf, it is found that $\mathrm{Q}=70 \mathrm{cal}$ and $\mathrm{w}=30 \mathrm{cal}$, along the path ibf. $\mathrm{Q}=52$ cal. $\mathrm{W}$ along the path ibf is
(A) 6 cal
(B) $12 \mathrm{cal}$
(C) $24 \mathrm{cal}$
(D) 8 cal

JEE Physics

StemEZ 1st Edition

Chapter 8, Problem 1124

Instant Answer

Solved by Expert Sachin Rao

09/30/2021

Step 1

Mathematically, it can be represented as: \[ \Delta U = Q - W \] Show more…

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When a System is taken from State $i$ to State $f$ along the path iaf, it is found that $\mathrm{Q}=70 \mathrm{cal}$ and $\mathrm{w}=30 \mathrm{cal}$, along the path ibf. $\mathrm{Q}=52$ cal. $\mathrm{W}$ along the path ibf is (A) 6 cal (B) $12 \mathrm{cal}$ (C) $24 \mathrm{cal}$ (D) 8 cal

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Key Concepts

First Law of Thermodynamics

This principle states that the total energy of an isolated system is conserved. In thermodynamics, it means that the change in internal energy of a system is equal to the heat added to the system minus the work done by the system. It provides the fundamental basis for calculating energy changes in different thermodynamic processes.

State Functions

State functions are properties that depend only on the current state of the system, not on the path taken to reach that state. Internal energy, for example, is a state function, meaning its change between two states is the same regardless of the process or pathway used to transition between those states.

Path Functions

Path functions are quantities that depend on the specific process or pathway taken between two states. Unlike state functions, properties such as heat and work can have different values for different paths, even when the overall change in state remains constant.

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