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Identify the unit vector in the followin...

Identify the unit vector in the following .

A

`hat(i) + hat(j)`

B

`(hat(i))/(sqrt(2))`

C

`hat(k) - (hat(j))/(sqrt(2))`

D

`(hat(i) + hat(j))/(sqrt(2))`

Text Solution

Verified by Experts

The correct Answer is:
D
`(hat(i)+hat(j))/(sqrt(2)) = sqrt(((1)/(sqrt(2)))^(2) +((1)/(sqrt(2)))^(2))=1`
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