Figure shows a body of mass \( m \) moving with a uniform speed \( v \) along a circle of radius...

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Figure shows a body of mass \( m \) moving with a uniform speed \( v \) along a circle of radius \( r \). The change in velocity in going from \( A \) to \( B \) is
[DPMT 2004]
(a) \( v \sqrt{2} \)
(b) \( v / \sqrt{2} \)
(c) \( v \)
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