question_answer

A student performs an experiment for determination of \[g\left[ =\frac{4{{\pi }^{2}}l}{{{T}^{2}}} \right],\] where \[l=1\,m\]and he commits an error of \[\Delta \,L.\] For the experiment, he takes the time for n oscillations with the stopwatch for least count \[\Delta \,T\] and he commits a human error of 0.1 sec. For which of the following data, the measurement of g will be most accurate.

	\[\Delta \,L\]	\[\Delta \,T\]	n	Amplitude of Oscillations
A	5 mm	0.2s	10	5mm
B	5 mm	0.2s	20	5 mm
C	5 mm	0.1s	20	1 mm
D	1 mm	0.1s	50	1 mm

A)  A                                

B)  B

C)  C                                

D)  D