AP EAMCET · PHYSICS · Thermodynamics
A Carnot engine A working between temperatures 600 K and \(\mathrm{T}( < 600 \mathrm{~K})\) and another Carnot engine B working between temperatures T (> 400 K ) and 400 K are connected in series. If the work done by both the engines is same, then \(T=\)
- A 550 K
- B 500 K
- C 575 K
- D 525 K
Answer & Solution
Correct Answer
(B) 500 K
Step-by-step Solution
Detailed explanation
\(W_A = W_B\) \(Q_{H,A} - Q_{C,A} = Q_{H,B} - Q_{C,B}\) Since engines are in series, \(Q_{C,A} = Q_{H,B} = Q_T\). \(Q_{H,A} - Q_T = Q_T - Q_{C,B}\) \(Q_{H,A} + Q_{C,B} = 2Q_T\) Using \(\frac{Q}{T} = \text{constant}\) for Carnot cycle:…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- If a straight current carrying wire of linear density \(0.12 \mathrm{~kg} \mathrm{~m}^{-1}\) is suspended in mid air by a uniform horizontal magnetic field of 0.5 T normal to the length of the wire, then the current through the wire is
(Acceleration due to gravity \(=10 \mathrm{~m} \mathrm{~s}^{-2}\); Neglect earth's magnetic field)AP EAMCET 2025 Medium - A soap bubble of radius \(r\) is blown up to form a bubble of radius \(2 r\) under isothermal conditions. If \(T\) is the surface tension of soap solution, the energy spent in the blowingAP EAMCET 2009 Easy
- The lower half of a vessel of depth \(2 d \mathrm{~cm}\) is filled with a liquid of refractive index \(\mu_1\) and the upper half with a liquid of refractive index \(\mu_2\). The apparent depth of the vessel seen perpendicularly isAP EAMCET 2020 Medium
- A boy throws a ball with a velocity ' \(\mathrm{V}_0\) ' at an angle ' \(\alpha\) ' to the ground. At the same time he starts running with uniform velocity to catch the ball before it hits the ground. To achieve this, he should run with a velocity ofAP EAMCET 2024 Medium
- An organ pipe \(P_1\), closed at one end and containing a gas of density \(\rho_1\) is vibrating in its first harmonic. Another organ pipe \(P_2\), open at both ends and containing a gas of density \(\rho_2\) is vibrating in its third harmonic. Both the pipes are in resonance with a given tuning fork. If the compressibility of gases is equal in both pipes, the ratio of the lengths of \(P_1\) and \(P_2\) is (assume the given gases to be monoatomic)AP EAMCET 2010 Easy
- A coil in the shape of an equilateral triangle of side \(2 \mathrm{~cm}\) is suspended from a vertex such that it hangs in a vertical plane between the poles of a permanent magnet producing a horizontal magnetic field of \(100 \times 10^{-3} \mathrm{~T}\). The magnetic field is parallel to the plane of the coil. For the moment of couple acting on the coil to be \(2 \sqrt{3} \times 10^{-5} \mathrm{Nm}\), the current to be passed through the coil isAP EAMCET 2019 Hard
More PYQs from AP EAMCET
- If \(f(x)=\frac{1}{1+\frac{1}{x}}\) and \(g(x)=\frac{1}{1+\frac{1}{f(x)}}\), then \(g^{\prime}(2)\) is equal toAP EAMCET 2013 Easy
- The most acidic carboxylic acid isAP EAMCET 2025 Medium
- Consider the following structure.
For codeine \(\mathrm{R}\) stands forAP EAMCET 2017 Easy - A point \(P(x, y)\) is such that the sum of squares of its distances from the co-ordinate axes is equal to the square of its distance
from the line \(x-y=1\). Then the equation of the locus of \(P\) isAP EAMCET 2020 Medium - If ' \(c\) ' is the speed of electromagnetic waves in vacuum, then their speed in a medium of dielectric constant ' \(\mathrm{K}\) ' and relative permittivity ' \(\mu_{\mathrm{r}}\) ' is ____AP EAMCET 2017 Easy
- Gas ' \(X\) ' is obtained on heating \(\mathrm{KClO}_3\) with catalyst \(\mathrm{MnO}_2\). This gas (in excess) on reaction with white phosphorus forms an acidic oxide ' \(Y\) '. ' \(Y\) ' on dissolving in water forms a compound ' \(Z\) '. Identify \(X, Y\) and \(Z\).AP EAMCET 2020 Medium