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NEET Sample Paper NEET Sample Test Paper-92

  • question_answer
    A particle starting from rest falls from a certain height. Assuming that the acceleration due to gravity remain the same throughout the motion, its displacements in three successive half second intervals are \[{{S}_{1}},\]\[{{S}_{2}}\] and \[{{S}_{3}}\] then

    A) \[{{S}_{1}}:{{S}_{2}}:{{S}_{3}}=1:5:9\]

    B) \[{{S}_{1}}:{{S}_{2}}:{{S}_{3}}=1:3:5\]

    C) \[{{S}_{1}}:{{S}_{2}}:{{S}_{3}}=9:2:3\]

    D) \[{{S}_{1}}:{{S}_{2}}:{{S}_{3}}=1:1:1\]

    Correct Answer: B

    Solution :

    [b] \[{{S}_{1}}=\frac{1}{2}\,\,g\,\,{{\left( \frac{1}{2} \right)}^{2}},\]\[{{S}_{1}}+{{S}_{2}}=g{{(1)}^{2}}\] \[\frac{1}{2}\,\,g\,\,{{\left( \frac{3}{2} \right)}^{2}}=S+{{S}_{2}}+{{S}_{3}}\]


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