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Byju's Answer
Standard XII
Physics
Displacement in 2D Motion
The vectors p...
Question
The vectors perpendicular to
^
i
−
^
j
−
^
k
in the plane of
^
i
−
^
j
−
^
k
and
−
^
i
+
^
j
+
^
k
are
A
2
^
i
+
^
j
+
^
k
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B
−
4
^
i
−
2
^
j
−
2
^
k
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C
4
^
i
+
2
^
j
+
2
^
k
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D
All the above
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Solution
The correct option is
B
All the above
¯
i
−
¯
j
−
¯
k
=
−
(
−
¯
i
+
¯
j
+
¯
k
)
...(i)
Thus the above two vectors are anti-parallel
and t
he normal to the plane is given by
¯
i
−
¯
j
−
¯
k
Hence the required vectors have to be perpendicular to the normal vector.
As we can observe all of the above options give
¯
V
.
(
¯
i
−
¯
j
−
¯
k
)
=
0
Hence the correct answer is all of the above.
Suggest Corrections
0
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