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If the planes vecr.(2hati-lamda hatj+3ha...

If the planes `vecr.(2hati-lamda hatj+3hatk)=0` and `vecr.(lamda hati+5hatj-hatk)=5` are perpendicular to each other then value of `lamda^(2)+lamda` is

A

0

B

2

C

1

D

3

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A
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