Significant Figures in CalculationsMediumQuestion 5020
Question
A student measures the diameter of a wire as 0.056 cm using a screw gauge of least count 0.001 cm. The number of significant figures is:
- A5
- B4
- C3
- D2Correct
Correct answer
2
Explanation
In 0.056 cm the zeros before 5 are leading zeros. The digits 5 and 6 give two significant figures. The final digit occupies the 0.001 cm place.