Question

Choose the incorrect statement among the following. (1) When a body is immersed fully or partially into a fluid, it experiences an upward force that is equal to weight of the fluid displaced by it (2) A stone is tied with a light spring balance using a light string. As this stone is slowly lowered into the water, the reading of the spring balance decreases till it touches the bottom of the container as shown in the figure given below Spring balance Water Stone (3) Lactometer is used to measure the purity of a sample of milk (4) The density of the object can be measured in kgcm–3

Answer 1

4 because the unit is kg/cubic metre

Answer 2

In my opinion,option 3rd is incorrect.