Discussion
Assertion (A): Cloud droplet radius depends only weakly on the liquid water content.
Reason (R): The radius varies as the cube root of the volume available to each droplet.
Answer: D
Both are true and the reason gives the cube root dependence, and a factor of eight in water content changes the radius by only two. Droplet number is much the more powerful influence on size. This is why aerosol changes droplet size so effectively.
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