If n- is a unit vector in the direction of the vector A- then-

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Standard XII

Physics

Unit Vectors

If n⃗ is a ...

Question

If $\to n$ is a unit vector in the direction of the vector $\to A$ , then:

\to n = | \to A | / \to A

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\to n = \to n \times \to n

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\to n = \to A / | \to A |

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\to n = \to A | \to A |

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Solution

The correct option is D $\to n = \to A / | \to A |$
A unit vector has a magnitude to be unity and such a vector is denoted by a letter with cap on it.
For example $ˆ n$ may be a unit vector in the direction of $\to A$ .
$∴ ˆ n = \frac{\to A}{∣ ∣ \to A ∣ ∣}$

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If →n is a unit vector in the direction of the vector →A, then:

The correct option is D →n=→A/|→A|A unit vector has a magnitude to be unity and such a vector is denoted by a letter with cap on it. For example ˆn may be a unit vector in the direction of →A.∴ˆn=→A∣∣→A∣∣

If $\to n$ is a unit vector in the direction of the vector $\to A$ , then:

The correct option is D $\to n = \to A / | \to A |$
A unit vector has a magnitude to be unity and such a vector is denoted by a letter with cap on it.
For example $ˆ n$ may be a unit vector in the direction of $\to A$ .
$∴ ˆ n = \frac{\to A}{∣ ∣ \to A ∣ ∣}$