Question

The x- component of a vector R is R, then its y- component will be (a) R/4 (b) Zero (c) (√3/2) R (d) (3/2) R ​

Answer 1

Answer:

Component of vector r in x direction, ∣r

x

∣=rcosθ

where θ is the angle between

r

and x axis

As ∣r

x

∣ is maximum, thus rcosθ is maximum.

This is possible only when cosθ=1

⟹ θ=0

o

Hence,

r

is along +ve x-axis.