Question

Assertion: If `hat(i)` and `hat(j)` are unit Vectors along x-axis and y-axis respectively, the magnitude of Vector `hat(i)+hat(j)` will be `sqrt(2)`
Reason: Unit vectors are used to indicate a direction only.

Answer 1

Correct Answer - B
Since `hati and hatj` are unit vectors, their magnitude are `|hati| = 1 and |hatj| = 1` . Magnitude of resultant vector is equal to `sqrt(|hati|^(2) + |hatj|^(2)) = sqrt((1)^(2) + (1)^(2)) = sqrt(2)`