Download App

STD 11 - 11. thermodynamics — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 11. thermodynamics4 Marks
Question
An ideal gas undergoes cyclic process as shown in density pressure graph. During the process $AB$ the work done $|W_{AB}| = 70\,J$ . During the process $BC$, the gas absorbs $150\,J$ of heat. During the process $CA$ , gas undergoes expansion and does $210\,J$ of work
✓

Answer

  $Q$ $\Delta U$ $W$
$AB$ $-70$ $0$ $-70$
$BC$ $150$ $150$ $0$
$CA$ $60$ $-150$ $210$

$\eta=\frac{140}{210} \times 100 \%=60 \%$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Water rises upto a height $h$ in a capillary on the surface of earth in stationary condition. Value of $h$ increases if this tube is taken
→
A straight conductor carrying current $i$ splits into two parts as shown in the figure. The radius of the circular loop is $R$. The total magnetic field at the centre $P$ of the loop is
→
Statement $-I$ : On viewing the clear blue portion of the sky through a calcite crystal, the intensity of transmitted light varies as the crystal is rotated.

Statement $-II$ : The light coming from the sky is polarized due to scattering of sun light by particles in the atmosphere. The scattering is largest for blue light.

→
A ray incident a ${15^o}$ on one refracting surface of a prism of angle ${60^o}$, suffers a deviation of ${55^o}$. What is the angle of emergence
→
Figure shows a uniform magnetic field $B$ confined to a cylindrical volume and increasing at a constant rate. The instantaneous acceleration experienced by an electron placed at $P$ is
→
Force $F$ on a particle moving in a straight line varies with distance $d$ as shown in figure.The work done on the particle during its displacement of $12\, m$ is $....... \mathrm{J}$
→
The required height of a TV tower which can cover the population of $6.03$ lakh is $h$. If the average population density is $100$ per square $km$ and the radius of earth is $6400\,km$, then the value of $h$ will be $...m .$
→
Two sirens situated one kilometer apart are producing sound of frequency $330 Hz$. An observer starts moving from one siren to the other with a speed of $2 m/s$. If the speed of sound be $330 m/s$, what will be the beat frequency heard by the observer
→
A point object is placed $20 \,cm$ left of a convex lens of focal length $f=5 \,cm$ (see in the below figure). The lens is made to oscillate with small amplitude $A$ along the horizontal axis. The image of the object will also oscillate along the axis with
→
The number density of free electrons in copper is nearly $8 \times 10^{28}\,m ^{-3} . A$ copper wire has its area of cross section $=2 \times 10^{-6}\,m ^2$ and is carrying a current of $3.2\,A$. The drift speed of the electrons is $.....\times 10^{-6}\,ms ^{-1}$.
→