1.

If D represents the diameter,rho the density , v the speed and etathe coefficient of viscosity , then the quantity (Drhov)/(eta) has :

Answer»

dimensions of mass
dimensions of length
dimensions of time
no dimensions.

SOLUTION :Here QUANTITY `=(Drhov)/(ETA)`
Putting the dimensions, we have
quantity `=(L^(1)M^(1)L^(-3)L^(1)T^(-1))/(M^(1)L^(-1)T^(-1))`
`=[M^(0)L^(0)T^(0)]`
`:.(d)` is correct


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