The ozone layer blocks ultraviolet radiation with wavelengths in which range?

Question

G1 Physics · Accepted Answer

Step 1: The ozone layer strongly absorbs short-wavelength ultraviolet radiation. Step 2: Its important protective band includes UV wavelengths shorter than about 300 nm = 3 × 10⁻⁷ m. Step 3: Thus the relevant choice is wavelengths less than 3 × 10⁻⁷ m, option A. Final answer: (A) less than 3 × 10⁻7 m.