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Question
Mathematics
Let the shortest distance between the lines L: (x-5/-2)=(y-λ/0)=(z+λ/1), λ ≥ 0 and L1: x+1=y-1=4-z be 2 √6. If (α, β, γ) lies on L, then which of the following is NOT possible?
Q. Let the shortest distance between the lines
L
:
−
2
x
−
5
=
0
y
−
λ
=
1
z
+
λ
,
λ
≥
0
and
L
1
:
x
+
1
=
y
−
1
=
4
−
z
be
2
6
. If
(
α
,
β
,
γ
)
lies on
L
, then which of the following is NOT possible?
1978
116
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JEE Main 2023
Three Dimensional Geometry
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A
α
+
2
y
=
24
0%
B
2
α
+
γ
=
7
100%
C
α
−
2
γ
=
19
0%
D
2
α
−
γ
=
9
0%
Solution:
b
1
×
b
2
=
∣
∣
i
^
−
2
1
j
^
0
1
k
^
1
−
1
∣
∣
=
−
i
^
−
j
^
−
2
k
^
a
2
−
a
1
=
6
i
^
+
(
λ
−
1
)
j
^
+
(
−
λ
−
4
)
k
^
2
6
=
∣
∣
1
+
1
+
4
−
6
−
λ
+
1
+
2
λ
+
8
∣
∣
∣
λ
+
3∣
=
12
⇒
λ
=
9
,
−
15
α
=
−
2
k
+
5
,
γ
=
k
−
λ
where
k
∈
R
⇒
α
+
2
γ
=
5
−
2
λ
=
−
13
,
35