The wavelength range of X-rays is

The correct answer is Option (2) → 1 nm to \( 10^{-3} \) nm

In the electromagnetic spectrum, X-rays lie between ultraviolet rays and gamma rays, with wavelengths from about \( 1\,\mathrm{nm} \) down to \( 10^{-3}\,\mathrm{nm} \).

NCERT (2026-27):
Gamma Rays – …