JEE Main & Advanced Physics Motion in a Straight Line / सरल रेखा में गति Question Bank Self Evaluation Test - Motion in a Strainght Line

  • question_answer
    A ball dropped from a point A falls down vertically to C, through the midpoint B. The descending time from A to B and that from A to C are in the ratio

    A) 1 : 1     

    B) 1 : 2 

    C) 1 : 3     

    D) \[1:\sqrt{2}\]

    Correct Answer: D

    Solution :

    For A to B \[S=\frac{1}{2}g{{t}^{2}}\text{         }....\text{(i)}\] For A to C \[\text{S=}\frac{1}{2}gt{{'}^{2}}\text{        }....\text{(ii)}\] Dividing (i) by (ii) we get \[\frac{t}{t'}=\frac{1}{\sqrt{2}}\]


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