3-1.Vectors
easy

$(\overrightarrow A - \overrightarrow B )$ तथा $(\overrightarrow A \times \overrightarrow B )$ सदिशों के बीच कोण है $(\overrightarrow{ A } \neq \overrightarrow{ B })$

A

$120$

B

$45$

C

$90$

D

$60$

(NEET-2017)

Solution

$\overrightarrow{ A }, \overrightarrow{ B }, \overrightarrow{ A }-\overrightarrow{ B }$ are in same plane. $\overrightarrow{ A } \times \overrightarrow{ B }$ is perpendicular to the plane of $\vec{A}, \vec{B}$ and $\vec{A}-\vec{B}$ then angle between $\vec{A}-\vec{B}$ and $\overrightarrow{ A } \times \overrightarrow{ B }$ is $90^{\circ}$.

Standard 11
Physics

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