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Manipal Entrance Test 2014 Physics Paper
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© examsnet.com
Question : 1
Total: 60
The equation
(
p
+
a
V
2
)
(
V
−
b
)
=
constant. The unit of
a
is
Dyne × cm
5
Dyne × cm
4
Dyne / cm
3
Dyne / cm
2
Validate
Solution:
According to the principle of dimensional homogenity
[
p
]
=
[
a
V
2
]
⇒
[
a
]
=
[
p
]
[
V
2
]
=
[
M
L
−
1
T
−
2
]
[
L
6
]
=
[
M
L
5
T
−
2
]
Hence, the units of
a
=
gm
×
cm
5
×
s
−
2
= Dyne × cm
4
© examsnet.com
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