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The unit vector along hati+hatj is...

The unit vector along `hati+hatj` is

A

`hatk`

B

`hati+hathatj`

C

`(hati+hatj)/(sqrt(2))`

D

`(hati+hatj)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
(C ) Let `A=hati+hatj`
`|A|=sqrt((1)^(2)+(1)^(2))=sqrt(2)`
`therefore` Unit vector along A will be `hatA` given by
`hatA=(A)/(|A|)=(hati+hatj)/(sqrt(2))`
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