List of top Physics Questions on Carnot engine asked in KEAM

A carnot engine works between the temperatures $327^\circ\text{C}$ and $227^\circ\text{C}$. If the work output of the engine is $1\text{ kJ}$, then the amount of heat absorbed by the engine is

In a carnot engine, the ratio of the heat rejected to the sink to the heat absorbed from the source is 1 : 4. If this ratio is changed to 1: 2, the change in engine efficiency is

A constant force acts on a body at rest, resulting it to move with constant acceleration. If power relates to time as \( P \propto t^n \), what is the value of \( n \)?

Which of the following statement is correct for EM wave:

What is the ratio of the longest wavelength in Lyman and Balmer series?

If \( r_1 = \frac{c_p}{c_v} \) of a rigid diatomic gas and \( r_2 = \frac{c_p}{c_v} \) of a non-rigid diatomic gas, find \( r_1 \) and \( r_2 \).

A Carnot engine is working between $127^{\circ}C$ and $27^{\circ}C$. Keeping the sink temperature unaltered, the temperature at which the source has to be kept so as to double its efficiency is ________.

An ideal Carnot engine working with source temperature T₁, and sink temperature T₂, has efficiency n. Then the value of the ratio \(\frac{T_1}{T_2}\) is

When the temperature of the source of a Carnot engine is at 400 K, its efficiency is 25%. The required increase in temperature of the source to increase the efficiency to 50% is