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JEE Mains 1-Feb-2023 Shift 2 Solved Paper

Section: Mathematics
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Question : 63 of 90
 
Marks: +1, -0
Let
→
a
=2‌
^
i
−7‌
^
j
+5‌
^
k
‌‌,‌‌
→
b
=‌
^
i
+‌
^
k
‌‌ and
→
c
=‌
^
i
+2‌
^
j
−3‌
^
k
 be three given vectors. If
→
r
 is a vector such that
→
r
×
→
a
=
→
c
×
→
a
 and
→
r
â‹…
→
b
=0, then |
→
r
| is equal to :
[1-Feb-2023 Shift 2]
Validate
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