Question
Question: Using a meter-stick, a length is measured by a student and he reported it as 0.3655m. The smallest p...
Using a meter-stick, a length is measured by a student and he reported it as 0.3655m. The smallest possible division on the scale is –
A
0.0001 m
B
0.001m
C
0.01m
D
0.0005 m.
Answer
0.001m
Explanation
Solution
A measurement is reported in significant figures which contain all certain and one, that is last, uncertain digit. In 0.3655 the last digit is uncertain, it comes from approximation or using mental division. The numbers before it are multiple of least count i.e. 0.365 is multiple of 0.001 m.