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Question

The thickness of the ozone layer is measured in terms of

A
Dobson Unit
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B
Light year
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C
Richter scale
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D
Decibels
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Solution

The correct option is A Dobson Unit

The thickness of the ozone layer in a column of air from the ground to the top of the atmosphere is measured in terms of Dobson Units (DU). Light year is a unit of astronomical distance equivalent to the distance that light travels in one year, which is 9.4607×1012 km. The Richter magnitude scale was developed in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to compare the magnitudes of earthquakes. The decibel (abbreviated dB) is the unit used to represent the intensity of sound.


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