The expression $\left( {\frac{1}{{\sqrt 2 }}\hat i + \frac{1}{{\sqrt 2 }}\hat j} \right)$ is a
The expression $\left( {\frac{1}{{\sqrt 2 }}\hat i + \frac{1}{{\sqrt 2 }}\hat j} \right)$ is a
- A
Unit vector
- B
Null vector
- C
Vector of magnitude $\sqrt 2 $
- D
Scalar
Similar Questions
A vector has a magnitude $x$. If it is rotated by an angle $\theta$, then magnitude of change in vector is $n x$. Match the following two columns.
Colum $I$
Colum $II$
$(A)$ $\theta=60^{\circ}$
$(p)$ $n=\sqrt{3}$
$(B)$ $\theta=90^{\circ}$
$(q)$ $n=1$
$(C)$ $\theta=120^{\circ}$
$(r)$ $n=\sqrt{2}$
$(D)$ $\theta=180^{\circ}$
$(s)$ $n=2$
| Colum $I$ | Colum $II$ |
| $(A)$ $\theta=60^{\circ}$ | $(p)$ $n=\sqrt{3}$ |
| $(B)$ $\theta=90^{\circ}$ | $(q)$ $n=1$ |
| $(C)$ $\theta=120^{\circ}$ | $(r)$ $n=\sqrt{2}$ |
| $(D)$ $\theta=180^{\circ}$ | $(s)$ $n=2$ |
The angle between vectors $\vec a$ and $\vec b$ is $\frac{\pi }{6}$. The angle between vectors $ - 3\vec a$ and $ 2\vec b$ is
The angle between vectors $\vec a$ and $\vec b$ is $\frac{\pi }{6}$. The angle between vectors $ - 3\vec a$ and $ 2\vec b$ is
When it is needed to use vector ?
When it is needed to use vector ?
“Explain the meaning of multiplication of vectors by real numbers with an example.”
“Explain the meaning of multiplication of vectors by real numbers with an example.”
How can we represent vector quantity ?
How can we represent vector quantity ?