Question

first law of thermodynamics

Answer 1

First law of thermodynamics
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It states that the heat energy given to a system is equal to the sum of the increase in internal energy and the work done by the system
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dQ = dU + dW
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dQ = heat energy
dU = internal energy
dW = work done
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Answer 2

$\textbf{\large{Answer -}}$

First law of thermodynamics is also known as $\textbf{Law of conservation of energy.}$

According to this law,

"Energy can neither be created nor be destroyed although it maybe converted from one form to another."

OR

"The energy of the universe remains constant although it may undergo transformation from one form to another."