Question

To be classified as nanoscale, objects must have dimensions of the order of:
(A) $1 \times 10^{-9} \text{ m}$
(B) $2 \times 10^{-9} \text{ m}$
(C) $3 \times 10^{-9} \text{ m}$
(D)$4 \times 10^{-9} \text{ m}$
Choose the correct answer from the options given below:

• A. (A), (B), (C).
• B. (A), (B), (D).
• C. (A), (B), (C), (D).
• D. (B), (C), (D).

Hint:

Nanoscales enable unique properties, including quantum effects and increased surface activity, across diverse applications.

Answer 1

The Correct Option is C

Nanoscale dimensions are typically within 1–100 nm, or $1 \times 10^{-9}$ to $1 \times 10^{-7}$ m.
All listed dimensions fall within the nanoscale range.