A 0.5 m high bed made up of a 1 mm dia glass sphere (density 2500 kg/m3 ) is to be fluidised by water (density 1000 kg/m3 ). If at the point of incipient fluidisation, the bed voidage is 40%, the pressure drop across the bed is________________?
(A) 4.4 KPa
(B) 2.94 KPa
(C) 3.7 KPa
(D) None of these
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