Question
Write the main points of efficiency of Carnot engine.

Answer

Main points of efficiency :
(i) Efficiency does not depend on the working substance.
(ii) Efficiency is greater when the temperature difference between source and sink is greater. It occurs, but it is always less than $100 \%$.
(iii) The efficiency of the Carnot engine depend only on the temperature of the source and the sink
(iv) All reversible (ideal) engines working between two equal temperature have the same efficiency.

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

Similar questions

Derive an expression for the height to which the liquid rises in a capillary tube of radius r.
A simple pendulum of length (l) is pulled aside to make an angle $\theta$ with the vertical. Find the magnitude of the torque of the weight (w) of the bob about the point of suspension. When is the torque zero?
An experimenter's diary reads as follows: "A charged particle is projected in a magnetic field of $(7.0\vec{\text{i}}-3.0\vec{\text{j}})\times10^{-3}\text{T}.$ The acceleration of the particle is found to be $(\vec{\text{i}}+7.0\vec{\text{j}})\times10\text{m/s}^{2\text{n}}.$ The number to the left of $\vec{\text{i}}$ in the last expression was not readable. What can this number be?
Two trains A and B of length 400m each are moving on two parallel tracks with a uniform speed of $72km/ h^{-1}$ in the same direction, with A ahead of B. The driver of B desires to overtake A and accelerates by $1ms^{-2}​​​​​​​$. If, after 50s, the guard of B just brushes past driver of A, calculate the original distance between the two trains.
A hydrogen atom in ground state absorbs a photon of ultraviolet radiation of wavelength 50nm. Assuming that the entire photon energy is taken up by the electron with what kinetic energy will the electron be ejected?
When a photon is emitted from an atom, the atom recoils. The kinetic energy of recoil and the energy of the photon come from the difference in energies between the states involved in the transition. Suppose, a hydrogen atom changes its state from $n = 3$ to $n = 2$. Calculate the fractional change in the wavelength of light emitted, due to the recoil.
The wavelength 1 associated with a moving particle depends upon its mass m, its velocity v and Planck's constant h. Show dimensional relation between them.
The centre of gravity of a body on the earth coincides with its centre of mass for a ‘small’ object whereas for an ‘extended’ object it may not. What is the qualitative meaning of ‘small’ and ‘extended’ in this regard? For which of the following the two coincides? A building, a pond, a lake, a mountain?
Name the three basic perceptions that made science Physics to progress.