Question

Which among the following measurements, contains the highest number of significant figures?

a)1.123 ×10^-3 kg
b)1.2×10^-3kg
c)0.123×10^-3kg
d)2×10^5kg

Answer 1

Answer:

Option a) 1.123×10^-3kg contains the highest number of significant figures.

Explanation:

RULES FOR SIGNIFICANT FIGURES :

1. All non-zero numbers ARE significant.

2. Zeros between two non-zero digits ARE significant.

3. Leading zeros are NOT significant.

4. Trailing zeros to the right of the decimal ARE significant.

5. Trailing zeros in a whole number with the decimal shown ARE significant.