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The component of a vector r along X-axis...

The component of a vector `r` along X-axis will have maximum value if

A

`vecr` is along positive y-axis

B

`vecr` is along positive x-axis

C

`vecr` makes an angle of `45^(@)` with the x-axis

D

`vecr` is along negative y-axis

Text Solution

Verified by Experts

The correct Answer is:
B
If `vecr` makes an angle `theta ` with x-axis, then component of `vecr` along x-axis = r cos`theta`.
It will be maximum if `cos theta = 1 or theta = 0^(@)`
i.e., `vecr` is along positive x-axis.
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