What is the condition for dispersion without deviation? – McqOptions

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1.	What is the condition for dispersion without deviation?
A.	δ-δ’=0
B.	δ+δ’=0
C.	δ × δ‘=0
D.	\(\frac {\delta}{\delta^{‘}}\)=0
Answer» C. δ × δ‘=0

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