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The value of lamda for which the vectors...

The value of `lamda` for which the vectors `vec(a) = hat(i) + 3hat(j) - hat(k) and hat(b) = 2hat(i) + 6hat(j) + lamda hat(k)` are parallel is-

A

2

B

`-2`

C

`(1)/(2)`

D

`-(1)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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