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A bullet is moving horizontally with certain velocity. It pierces two paper discs rotating coaxially with angular speed ω separated by a distance l. If the hole made by bullet on second disc is shifted by an angle θ with respect to the first, find velocity of bullet.

(A) ωl

(B) \(\frac{lθ}{ω}\)(θ)2

(C) ω\(\frac{l}{θ}\)

(D) ωl

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Best answer

Answer is  (C) ω\(\frac{l}{θ}\)

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