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EAMCET Engineering 2002 Solved Paper
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© examsnet.com
Question : 122
Total: 200
The direction ratios of normal to the plane passing through
(
0
,
0
,
1
)
,
(
0
,
1
,
2
)
and
(
1
,
0
,
3
)
, are
(
2
,
1
,
−
1
)
(
1
,
0
,
1
)
(
0
,
0
,
−
1
)
(
1
,
0
,
0
)
Validate
Solution:
Equation of the plane passing through
(
0
,
0
,
1
)
,
(
0
,
1
,
2
)
and
(
1
,
0
,
3
)
is
|
x
y
z
1
0
0
1
1
0
1
2
1
1
0
3
1
|
=
0
Applying
C
3
→
C
3
−
C
4
⇒
|
x
y
z
−
1
1
0
0
0
1
0
1
1
1
1
0
2
1
|
=
0
⇒
|
x
y
z
−
1
0
1
1
1
0
2
|
=
0
Applying
C
2
→
C
2
−
C
3
|
x
y
−
z
+
1
z
−
1
0
0
1
1
−
2
2
|
=
0
⇒
−
|
x
y
−
z
+
1
1
−
2
|
=
0
⇒
−
[
−
2
x
−
(
y
−
z
+
1
)
]
=
0
⇒
2
x
+
y
−
z
+
1
=
0
The direction ratios of the normal are
(
2
,
1
,
−
1
)
.
© examsnet.com
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