First slide

Heat engine

Question

An ideal heat engine working between temperature $T_{1}$ and $T_{2}$ has an efficiency . The new efficiency if both the source and sink temperature are doubled, will be

Easy

A

$η / 2$
B

$η$
C

$2 η$
D

$3 η$

Solution

$\begin{array}{l} η_{1} = \frac{T_{1} - T_{2}}{T_{1}} \\ η_{2} = \frac{2 T_{1} - 2 T_{2}}{2 T_{1}} = η_{1} \end{array}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App