If dΦ is the luminous flux incident normally on an area dA, then Illu – McqOptions

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1.	If dΦ is the luminous flux incident normally on an area dA, then Illuminance is given as:
A.	dΦ - dA
B.	Φ × A
C.	\(\frac{{dA}}{{d{\rm{\Phi }}}}\)
D.	\(\frac{{d{\rm{\Phi }}}}{{dA}}\)
Answer» E.

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