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Question

v=2^i+^j^k and w=^i , u is a unit vector then the maximum value of [u v w] is

A
1
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B
10+6
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C
2
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D
60
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Solution

The correct option is C 2
v×w=∣ ∣ ∣i^j^k211100∣ ∣ ∣=^j^k

=[uv w]=vv×w
=|u||v×w|cosθ
UU×w
2

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