First slide

Scalars and Vectors

Question

The unit vector along $\hat{i} + \hat{j}$ is

Easy

A

$\hat{k}$
B

$\hat{i} + \hat{j}$
C

$\frac{\hat{i} + \hat{j}}{\sqrt{2}}$
D

$\frac{\hat{i} + \hat{j}}{2}$

Solution

$\hat{R} = \frac{\vec{R}}{| R |} = \frac{\hat{i} + \hat{j}}{\sqrt{1^{2} + 1^{2}}} = \frac{1}{\sqrt{2}} \hat{i} + \frac{1}{\sqrt{2}} \hat{j}$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App