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If

    \[\overrightarrow{a}\]

is a non zero vector of magnitude ‘a’ and

    \[\lambda \]

a non zero scalar, then

    \[\lambda \overrightarrow{a}\]

is unit vector if (A)

    \[\lambda =1\]

(B)

    \[\lambda =-1\]

(C)

    \[a=\left| \lambda \right|\]

(D)

    \[a=1/\left| \lambda \right|\]

CBSE | Class 12 | Exercise 10.3 | Maths | NCERT | Vector Algebra
If

    \[\overrightarrow{a}\]

is a non zero vector of magnitude ‘a’ and

    \[\lambda \]

a non zero scalar, then

    \[\lambda \overrightarrow{a}\]

is unit vector if (A)

    \[\lambda =1\]

(B)

    \[\lambda =-1\]

(C)

    \[a=\left| \lambda \right|\]

(D)

    \[a=1/\left| \lambda \right|\]

i

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