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EAMCET Engineering 2003 Solved Paper
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© examsnet.com
Question : 101
Total: 160
XOZ
-plane divides the join of
(
2
,
3
,
1
)
and
(
6
,
7
,
1
)
in the ratio:
3
:
7
2
:
7
−
3
:
7
−
2
:
7
Validate
Solution:
Let
X
O
Z
-plane divides the joining the point
(
2
,
3
,
1
)
and
(
6
,
7
,
1
)
into
m
:
n
, then the co-ordinate of
X
O
Z
-plane is
(
m
x
2
+
n
x
1
m
+
n
,
m
y
2
+
n
y
1
m
+
n
,
m
z
2
+
n
z
1
m
+
n
)
=
(
6
m
+
2
n
m
+
n
,
7
m
+
3
n
m
+
n
,
m
+
n
m
+
n
)
But on the XOZ-plane
y
-coordinate will be zero, then
7
m
+
3
n
m
+
n
=
0
⇒
m
n
=
−
3
7
∴
m
:
n
=
−
3
:
7
© examsnet.com
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