If dp is the equivalent diameter of a non-spherical particle, Vp its volume and

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Question
If dp is the equivalent diameter of a non-spherical particle, V_p its volume and sp its surface area, then its sphericity is ?_s is defined by
Options
A. ?_s = 6 V_p/d_p s_p
B. ?_s = V_p/d_p s_p
C. ?_s = 6 d_p S_p/V_p
D. ?_s = d_p S_p/V_p

Correct Answer

?_s = 6 V_p/d_p s_p

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