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Consider the two vectors : vecL=1hati+2h...

Consider the two vectors : `vecL=1hati+2hatj+3hatk " and " vecl=4hati+hatj+6hatk`. Find the value of the scalar `alpha ` such that the vector `vecL-alpha vecl` is perpendicular to `vecL`.

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The correct Answer is:
`(7)/(12)`
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ALLEN-UNIT & DIMENSIONS, BASIC MATHS AND VECTOR -Exercise (S-1)
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