Match List - I with List - II.
$$\begin{array}{|l|l|l|l|}\hline & \text{List - I (Number)} & & \text{List - II (Significant figures)} \\ \hline \text{A.} & 1001 & \text{I.} & 3 \\ \hline \text{B.} & 010.1 & \text{II.} & 4 \\ \hline \text{C.} & 100.100 & \text{III.} & 5 \\ \hline \text{D.} & 0.0010010 & \text{IV.} & 6 \\ \hline \end{array}$$
Choose the correct answer from the options given below:
Answer: (C) (A)-(II), (B)-(I), (C)-(IV), (D)-(III)
- $1001$: zeros between non-zero digits count, so 4 significant figures → (II).
- $010.1$: the leading zero does not count; $10.1$ has 3 significant figures → (I).
- $100.100$: trailing zeros after the decimal point count, so 6 → (IV).
- $0.0010010$: leading zeros do not count; $10010$ gives 5 → (III).
So (A)-(II), (B)-(I), (C)-(IV), (D)-(III).
Solution by Sreeraj P, M.Sc Physics