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EAMCET Engineering 2005 Solved Paper
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© examsnet.com
Question : 19
Total: 160
The tyre of a motor car contains air at
15
∘
C
. If the temperature increases to
35
∘
C
, the approximate percentage increase in pressure is (ignore to expansion of tyre)
7
9
11
13
Validate
Solution:
T
1
=
15
∘
C
=
15
+
273
=
288
K
T
2
=
35
∘
C
=
35
+
273
=
308
K
Volume remains constant.
So,
p
1
T
1
=
p
2
T
2
p
1
p
2
=
T
1
T
2
⇒
p
1
p
2
=
288
308
p
2
p
1
=
308
288
%
increase in pressure
=
p
2
−
p
1
p
1
×
100
=
308
−
288
288
×
100
≈
7
%
© examsnet.com
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