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Vector Algebra question

2021 · 26 Aug · Shift 2 · Q41

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PYQ Library
JEE Main
Mathematics
Vector Algebra
2021 · 26 Aug · Shift 2 · Q41

Vector Algebra question

2021 · 26 Aug · Shift 2 · Q41

JEE MainMathematicsVector AlgebraNumerical+4 / −1

If the projection of the vector

\widehat i + 2\widehat j + \widehat k

on the sum of the two vectors

2\widehat i + 4\widehat j - 5\widehat k

and

- \lambda \widehat i + 2\widehat j + 3\widehat k

is 1, then

\lambda

is equal to

\underline{\hspace{2cm}}

.

Numerical answer

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