Read the following write up and answer the questions based on that. The graph below gives the co....

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Read the following write up and answer the questions based on that.
The graph below gives the coordinate of a particle travelling along the \( \mathrm{X} \)-axis as a function of time. \( \mathrm{AM} \) is the tangent to the curve at the starting moment and \( \mathrm{BN} \) is tangent at the end moment \( \left(\theta_{1}=\theta_{2}=120^{\circ}\right) \).

Time interval during which the motion is retarded.
(A) 0 to \( 20 \mathrm{sec} \).
(B) 10 to \( 20 \mathrm{sec} \).
(C) 0 to \( 10 \mathrm{sec} \).
(D) None of these


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