'Ringelmann scale' is used to measure density of
Verified Answer
A. Smoke
B. Polluted water
C. Fog
D. Noise
Explanation:
The Ringelmann scale is a chart used to measure the opacity or density of smoke emitted from stacks.
'Ringelmann scale' is used to measure density of
The Ringelmann scale is a chart used to measure the opacity or density of smoke emitted from stacks.