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Let vec a = i-2j+3k If vec b is a vector...

Let `vec a = i-2j+3k` If `vec b` is a vector such that `vec a. vec b = |vecb|^2` and `|vec a- vecb|=sqrt7` then `|vecb|=`

A

7

B

14

C

`sqrt7`

D

21

Text Solution

Verified by Experts

The correct Answer is:
C
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