Heat is given to an ideal gas in an isothermal process.
$A.$ Internal energy of the gas will decrease.
$B.$ Internal energy of the gas will increase.
$C.$ Internal energy of the gas will not change.
$D.$ The gas will do positive work.
$E.$ The gas will do negative work.
Choose the correct answer from the options given below :
JEE MAIN 2023, Medium
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$dQ = dU + dW \Rightarrow dU = nC _{ V } dT$
$dU =0 \quad \text { (for isothermal) }$
$U =\text { constant }$
$Also dQ > 0 \quad \text { (supplied) }$
Hence,$dW > 0$
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