A particle is moving on a circular path of radius $r$ with uniform speed $v$. The magnitude of change in velocity when the particle moves from $P$ to $Q$ is $(\angle POQ = 40^o)$
A particle is moving on a circular path of radius $r$ with uniform speed $v$. The magnitude of change in velocity when the particle moves from $P$ to $Q$ is $(\angle POQ = 40^o)$
- A
$2v\, cos\, 40^o$
- B
$2v\, sin\, 40^o$
- C
$2v\, sin\, 20^o$
- D
$2v\, cos\, 20^o$
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