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JEEMAIN and NEET
>>
Mathematics
>>
Class12
>>
Vector Algebra
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Q)
A vector
a
ˆ
i
+
b
ˆ
j
+
c
ˆ
k
is such that its magnitude is
|
a
|
+
|
b
|
+
|
c
|
. This is possible only if
(
a
)
a
=
b
=
c
=
0
(
b
)
a
n
y
t
w
o
o
f
a
,
b
a
n
d
c
a
r
e
z
e
r
o
(
c
)
a
n
y
o
n
e
o
f
a
,
b
,
c
i
s
z
e
r
o
(
d
)
a
+
b
+
c
=
0
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