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JEE Main & Advanced JEE Main Paper (Held On 12 May 2012)

  • question_answer
    A student measured the diameter of a wire using a screw gauge with the least count 0.001 cm and listed the measurements. The measured value should be recorded as   JEE Main Online Paper (Held On 12 May 2012)

    A) 5.3200cm            

    B)                        5.3cm            

    C)                        5.32cm                                 

    D)                        5.320cm

    Correct Answer: D

    Solution :

                    The least count (L.C.) of a screw guage is the smallest length which can be measured accurately with it. As least count is \[0.001cm=\frac{1}{1000}cm\] Hence measured value should be recorded upto 3 decimal places i.e., 5.320 cm


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