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JEEMAIN and NEET
>>
JEEMAIN PAST PAPERS
>>
1999
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Q)
If
→
a
=
3
ˆ
i
−
2
ˆ
j
+
ˆ
k
and
→
b
=
ˆ
i
+
2
ˆ
j
+
5
ˆ
k
, then the unit vectors along
→
a
−
→
b
is :
( A )
√
2
ˆ
i
+
4
ˆ
j
+
4
ˆ
k
√
34
( B )
−
2
ˆ
i
+
4
ˆ
j
+
4
ˆ
k
6
( C ) none of these
( D )
ˆ
i
−
2
ˆ
j
−
2
ˆ
k
3
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