Correct option is A
The
apparent mass of an object submerged in a fluid is given by:
Apparent Mass = Actual Mass − Buoyant Force
Buoyant force is equal to the weight of the displaced fluid:
Buoyant Force = Mass of Displaced Water
The mass of displaced water can be found using:
Mass of Displaced Water=Actual Mass/Relative Density
Mass of Displaced Water = 500/2.5 = 200 g
Apparent Mass = 500 – 200 = 300 g