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Vector Algebra question

2020 · 3 Sep · Shift 1 · Q35

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PYQ Library
JEE Main
Mathematics
Vector Algebra
2020 · 3 Sep · Shift 1 · Q35

Vector Algebra question

2020 · 3 Sep · Shift 1 · Q35

JEE MainMathematicsVector AlgebraMCQ+4 / −1

The lines

\overrightarrow r = \left( {\widehat i - \widehat j} \right) + l\left( {2\widehat i + \widehat k} \right)

and

\overrightarrow r = \left( {2\widehat i - \widehat j} \right) + m\left( {\widehat i + \widehat j + \widehat k} \right)

A
do not intersect for any values of $l$ and m
B
intersect for all values of $l$ and m
C
intersect when $l$ = 2 and m = ${1 \over 2}$
D
intersect when $l$ = 1 and m = 2

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