First slide

Motion in a plane

Question

Set the following vectors in the increasing order of their magnitude
a ) $\large 3\hat i+4\hat j$
b) $\large 2\hat i+4\hat j+6\hat k$
c) $\large 2\hat i+2\hat j+2\hat k$

Moderate

A

a, b, c
B

c, a, b
C

a, c, b
D

b, c, a

Solution

(a) $(a)\sqrt{3^2+4^2}=5;b=\sqrt{2^2+4^2+6^2}=7.48;(c)\sqrt{2^2+2^2+2^2}=3.46$
So , option -(2) is correct

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