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CBSE Class 11-science Answered

The least count of a stop watch is 0.4 second. The time of 30 oscillations of a pendulum is measured to be 50 seconds. The maximum percentage error in this measurement is found to be 0.x%. What is the value of x

Asked by Anil | 22 May, 2017, 02:16: PM
answered-by-expert Expert Answer
begin mathsize 12px style Percentage space error space in space measuring space time space period space is straight n equals ΔT over straight T cross times 100 therefore straight n equals fraction numerator Least space count over denominator Measured space value end fraction cross times 100 straight n equals fraction numerator 0.4 over denominator 50 end fraction cross times 100 equals 0.8 percent sign Therefore comma space the space value space of space straight x space is space 8. end style
Answered by Romal Bhansali | 23 May, 2017, 09:25: AM

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CBSE 11-science - Physics
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