Question

what will be the and of this question ​

Answer 1

$\bold {\huge {Your ~answer :-}}$

$\bf\huge\boxed{750\:K}$

Option-(1)

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EXPLAINATION ➣

$\pink{\texttt{Problems based on Carnot Engine }}$

$Given-\\ \eta_1 =0.4\:\:\:\:\:T_1=500\:k\:\:\:\:\:\:\:T_2=? =x(let) \\\\\eta_2=0.6\:\:\:\:\:T'_1=? \:\:\:\:\:\:T'_2= x(same) \\\\case-1\\\Rightarrow\eta_1=1-\frac{T_2}{T_1}\\\Rightarrow0.4=1-\frac{x}{500}\\\Rightarrow\:x=300\:k\\\\case-2\\\Rightarrow\eta_2=1-\frac{T'_2}{T'_1}\\\Rightarrow0. 6=1-\frac{300}{T'_1}\\\Rightarrow\:T'_1=750\:k$

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Answer 2

Answer:

option 4

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