Three girls skating on a circular ice ground of radius \(200\) m start from a point \(P\) on the edge of the ground and reach a point \(Q\) diametrically opposite to \(P\) following different paths as shown in the figure. The correct relationship among the magnitude of the displacement vector for three girls will be:

      

1.  A>B>C

2. C>A>B

3. B>A>C

4. A=B=C

Subtopic:  Position & Displacement |
 84%
From NCERT
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\(\hat{i}\) and \(\hat{j}\) are unit vectors along the x- and y-axis respectively. What is the magnitude and direction of the vector \(\hat{i}-\hat{j}?\)
 
1. \(\sqrt2,~45^\circ\) with the x-axis.
2. \(\sqrt2,~-45^\circ\) with the x-axis.
3. \(\frac1{\sqrt2},~60^\circ\) with the x-axis.
4. \(\frac1{\sqrt2},~-60^\circ\) with the x-axis.
 

Subtopic:  Position & Displacement |
 63%
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