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Byju's Answer
Standard XII
Physics
Thermodynamic Processes
For an isothe...
Question
For an isothermal process :
A
dQ= dW
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B
dQ
=
dU
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C
dW
=
dU
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D
dQ = dU + dW
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Solution
The correct option is
A
dQ= dW
Internal energy is a function of temperature only. Therefore, in case of isothermal process, it will be constant.
From
F
i
r
s
t
L
a
w
o
f
T
h
e
r
m
o
d
y
n
a
m
i
c
s
,
d
Q
=
d
U
+
d
W
and here,
d
U
=
0
So,
d
Q
=
d
W
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0
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