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If |a| = 3 , |b| = 4 , then a value of ...

If `|a| = 3 , |b| = 4 ` , then a value of `lamda` for which `a + lamda b ` is perpendicular to `a - lamda b` is

A

`(9)/(16)`

B

`(3)/(4)`

C

`(3)/(2)`

D

`(4)/(3)`

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b
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