If an object is immersed wholly in a liquid causing upthrust equal to weight of body then what will be the relation between the relative densities of liquid and object ??? PLz help the earliest !

As upthrust is equal to

V (of object)  * Density of liquid * g

and weight og body = mass * g

                                    = density of object * V of object * g   (m = d * v)

Hence,

 V (of object)  * Density of liquid * g   =  density of object * V of object * g

So,   Density of liquid  =  density of object

as their densities are equal so their their relative densities are also equal (becoz  RD = density of object/ density of water)