Match List-I with List-II.
| List-I | List-II | ||
|---|---|---|---|
| (Prefix) | (Value) | ||
| (A) | Giga | (I) | \(10^{-2}\) m |
| (B) | Nano | (II) | \(10^{2}\) m |
| (C) | Hecto | (III) | \(10^{-9}\) m |
| (D) | Centi | (IV) | \(10^{9}\) m |
Choose the most appropriate answer from the options given below:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
An SI prefix multiplies the unit by a fixed power of 10; for the metre, each prefix gives the length shown in List-II.
(A) Giga — this matches (IV) \(10^{9}\) m. Giga means a thousand million, as in gigabyte or gigawatt.
(B) Nano — this matches (III) \(10^{-9}\) m. Nano means one thousand-millionth; a nanometre is used for the size of molecules and the wavelength of light.
(C) Hecto — this matches (II) \(10^{2}\) m. Hecto means a hundred, as in the hectare (100 m × 100 m).
(D) Centi — this matches (I) \(10^{-2}\) m. Centi means one hundredth: a centimetre is one hundredth of a metre.