Questions
The component of a vector r along X-axis will have maximum value, if [NCERT Exemplar]
a
r is along positive Y-axis
b
r is along positive X-axis
c
r makes an angle of 450 with the X-axis
d
r is along negative Y-axis
detailed solution
Correct option is B
Let r makes an angle 0 with positive X-axis, so component of r along X-axis,rX=|r|cosθrXmaximum =|r|(cosθ)maximum =|r|cos0°∵cosθ is maximum, if θ=0°=|r| As θ=0°i.e. r is along positive X-axis.Talk to our academic expert!
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A vector rotated about its tail through an angle 450 in clockwise direction. Then the new vector is
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