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3 grooves AB,AC and AD are made in a circular disk lying in a vertical plane 3 particles B,C and D constrained to move along path AB,AC and AD respectively are released from point A.Particle B reaches point B in time tB,particle C reaches point C in time tC and particle D reaches at point D in time tD.Then which of the following statements is incorrect

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tiara143

Ans. The correct answer is: option (a) i.e. (a)  tB = tC = tD

Since when we calculate the relative velocity of a particle with respect to another particle along the same line, then the particles can never have an equal velocity and therefore the time taken by the particles will be different and not same. Therefore, all the particles will reach at different time interval. So statement (a) is incorrect.

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