P-V diagram of a system undergoing thermodynamic transformation is shown in figure. work done on sys

English

Gujarati

Hindi

11.Thermodynamics

medium

The $P-V$ diagram of a system undergoing thermodynamic transformation is shown in figure. The work done on the system in going from $A → B → C$ is $50 J$ and $ 20\, cal$ heat is given to the system. The change in internal energy between $A$ and $C$ is ...... $J$

A

$34 $

B

$70 $

C

$84 $

D

$134 $

Solution

(d) Heat given $\Delta Q = 20\,cal = 20 \times 4.2\, = 84\,J$.

Work done $\Delta W = -50 J$ [As process is anticlockwise]

By first law of thermodynamics

==> $\Delta U = \Delta Q – \Delta W = 84 – ( – \,50)\, = 134J$

Standard 11

Physics

Share

Similar Questions

What is the total work done in a cyclic process ?

medium

A thermodynamic system is taken through cyclic process. The total work done in the process is $………\,J$

easy

(JEE MAIN-2023)

A gas takes part in two processes in which it is heated from the same initial state $1$ to the same final temperature. The processes are shown on the $P-V$ diagram by the straight line $1-2$ and $1-3$. $2$ and $3$ are the points on the same isothermal curve. $Q_1$ and $Q_2$ are the heat transfer along the two processes. Then

normal

Heat energy absorbed by a system in going through a cyclic process shown in figure is

medium

(AIIMS-1995)

An ideal gas undergoes the process $1 \rightarrow 2$ as shown in the figure, the heat supplied and work done in the process is $\Delta \,\,Q$ and $\Delta \,\,W$ respectively. The ratio $\Delta \,\,Q :$ $\Delta \,\,W$ is

hard