A) 1.2
B) 0.4
C) 0.9
D) 0.3
Correct Answer: B
Solution :
Here,\[{{T}_{1}}=500\,K,\,{{T}_{2}}=300\,K\] On using \[\eta =\frac{{{T}_{1}}-{{T}_{2}}}{{{T}_{1}}}\] \[=\frac{(500-300)}{500}\] \[=\frac{200}{500}\] \[=0.4\] Hence, the correct option is (b).You need to login to perform this action.
You will be redirected in
3 sec