A student performs an experiment for determination of (A) 5 mm (B) 5 mm (C) 5 mm (D) 1 mm For T he takes the time of n oscillations with the stop watch of least count AT and he commits a human error of 0.1 sec. For which of the following data, the measurement of g will be most accurate? Al AT n Amplitude of oscillation 0.2 sec 0.2 sec 0.1 sec 0.1 sec 10 20 20 50 4l T 5 mm 5 mm 1 mm 1 mm l 1m, and he commits an error of Al.