NEET Sample Paper NEET Sample Test Paper-17

  • question_answer On the displacement-time graph, two straight lines make angles \[60{}^\circ \] and \[30{}^\circ \], with time axis as shown in the figure. The ratio of the velocities represented by them is

    A)  1 : 2                           

    B)  1 : 3                           

    C)  2 : 1                           

    D)  3 : 1

    Correct Answer: D

    Solution :

    Velocity given by \[OA=\tan {{60}^{o}}=\sqrt{3}\,m/s\] Velocity given by \[AB={{\tan }^{{{30}^{o}}}}=-\frac{1}{\sqrt{3}}\,m/s\] Required ratio\[=\frac{\sqrt{3}}{1/\sqrt{3}}=3:1\] Hence, the correction option is [d].

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