Vector Projection and Perpendicularity (Jee Mains) | ExamDuo
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Scalar and Vector Products
Medium
Vector Projection and Perpendicularity
Let
→
a
=
^
i
+
^
j
+
√
2
^
k
,
→
b
=
b
1
^
i
+
b
2
^
j
+
√
2
^
k
and
→
c
=
5
^
i
+
^
j
+
√
2
^
k
be three vectors such that theprojection vector of
→
b
on
→
a
is
→
a
. If
→
a
+
→
b
is perpendicular to
→
c
, then
|
→
b
|
is equal to :
Ask about this question
SELECT ONE OPTION
A
√
22
B
4
C
√
32
D
6
Check