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If the planes vecr*(2hati-lambdahatj+3h...

If the planes `vecr*(2hati-lambdahatj+3hatk)=0andvecr*(lambdahati+5hatj-hatk)=5`
are perpendicular to each other , then the value of `lambda^(2)+lambda` is

A

0

B

2

C

1

D

3

Text Solution

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The correct Answer is:
A
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