Question

50. A vector is represented by 3i+j+2k. Its length in
XY plane is
(1) 2
(2) root 14
(3) root 10
(4) root 5​

Answer 1

Answer:

3) root 10

Explanation:

t’s magnitude or length in a given plane is determined by:

√x²+y²

where x and y denote the x and y components respectively.

Putting in the values, the output obtained is:

√ 3²+1²

=√10

hope it helps..