Given below are two statements. One is labelled as Assertion A an… - Vidyadip

MCQ

Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason $R$.

Assertion $A$ : If $dQ$ and $dW$ represent the heat supplied to the system and the work done on the system respectively. Then according to the first law of thermodynamics $d Q=d U-d W$.

Reason $R :$ First law of thermodynamics is based on law of conservation of energy.

In the light of the above statements, choose the correct answer from the option given below :

A
$A$ is correct but $R$ is not correct
B
$A$ is not correct but $R$ is correct
✓
Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$
D
Both $A$ and $R$ are correct but $R$ is not the correct explanation of $A$

✓

Answer

Correct option: C.

Both $A$ and $R$ are correct and $R$ is the correct explanation of $A$

c
First law of thermodynamics is based on law of conservation of energy and it can be written as $dQ = dU - dW$ where $d$W is work done on the system

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