A spring balance measures the weight of an object in air to be 0.1 N. It shows a reading of 0.08 N when the object is completely immersed in water. If the value of acceleration due to gravity is 10 m/s2​ the volume of the object is
(1) 20 cm3
(2) 80 cm​3
(3) 200 cm​3
(4) 2 cm​3

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