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A smooth sphere A is moving on a frictionless horizontal plane with angular speed  ω and centre of mass is moving translationally with velocity 'v'. It collides elastically and head-on with an identical sphere B which is at rest. All surfaces are frictionless. After the collision, their angular speeds are ωA and ωB, respectively. Then,



A
 
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B
 
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C
 
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D
 
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Solution

The correct option is C  
ωB=0 rotational KE can’t be transferred from A to B as surfaces are frictionless.
 

Physics

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