Discussion
More spraying pressure results in?
Answer: A
Higher spraying pressure results in a reduction of droplet size.
A hydraulic nozzle breaks the liquid into a sheet that disintegrates into droplets. Higher pressure gives a faster, thinner sheet that breaks up into finer droplets, and also increases the flow rate. That is why drift increases at high pressure: small droplets are carried by wind.
Droplets get larger, not smaller, when pressure is lowered, so 'Increase of droplet size' is the reverse. 'No change' is wrong because pressure is one of the main controls on droplet size, along with nozzle type and orifice size.
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