Question

Thickness of ozone in column of air from ground to top of atmosphere is measured in terms of

• A. Decibel units
• B. Pascal units
• C. Svedberg units
• D. Dobson units
• E. Angstrom units

Answer 1

The correct option is D Dobson units

A. Decibel (dB) is the unit to measure the intensity of sound.

B. Pascal (Pa) is the unit measure pressure.

C. Svedberg (S) is a non-metric unit used to express the sedimentation coefficient of particles.

D. Dobson unit (DU) is used to measure the thickness of earth's atmosphere.

E. Angstrom (Å) is a unit of length used to express the size of atoms, molecules etc.

Hence, thickness of ozone in column of air from ground to top of atmosphere is measured in terms of Dobson units.

So, the correct answer is 'Dobson units'.