SATHEE: Thermodynamics Question 343

Thermodynamics Question 343

Question: If $Δ Q$ and $Δ W$ represent the heat supplied to the system and the work done on the system respectively, then the first law of thermodynamics can be written as

Options:

A) $Δ Q = Δ U + Δ W$

B) $Δ Q = Δ U - Δ W$

C) $Δ Q = Δ W - Δ U$

D) $Δ Q = - Δ W - Δ U$

Show Answer

Answer:

Correct Answer: B

Solution:

[b] From FLOT $Δ Q = Δ U + Δ W$

Q Heat supplied to the system so DQ Positive

and work is done on the system so DW Negative

Hence +DQ = DU - DW

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Thermodynamics Question 343

Question: If ΔQ and ΔW represent the heat supplied to the system and the work done on the system respectively, then the first law of thermodynamics can be written as

Options:

Answer:

Solution:

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Question: If $Δ Q$ and $Δ W$ represent the heat supplied to the system and the work done on the system respectively, then the first law of thermodynamics can be written as