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If the lines barr =(2i) + lambda(i+2j+mk...

If the lines `barr =(2i) + lambda(i+2j+mk)` and `barr=(i+j)+mu(2i+j+2k)` are mutually perpendicular, them: m=

A

1

B

2

C

3

D

`-2`

Text Solution

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The correct Answer is:
A, B, C, D
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