An object weighs 10 N in air. When immersed fully in a liquid, it weighs only 8 N. The weight of liquid displaced by the object will be:

A. 2 N B. 8 N

C. 10 N D. 12 N

A piece of steel has a volume of 12 cm³, and a mass of 96 g. What is its density: (i) In g/cm³? (ii) In kg/m³?

An elephant weighing 40,000 N stands on one foot of area 000 cm² whereas a girl weighing 400 N is standing on one ‘stiletto’ heel of area 1 cm². (Pictures)

(a) Which of the two, elephant or girl, exerts a larger force on the ground and by how much?

(b) What pressure is exerted on the ground by the elephant standing on one foot?

(c) What pressure is exerted on the ground by the girl standing on one heel?

(d) Which of the two exerts larger pressure on the ground: elephant or girl?

(e) What is the ratio of pressure exerted by the girl to the pressure exerted by the elephant?

A rectangular wooden block has length, breadth and height of 50 cm, 25 cm and 10 cm, respectively. This wooden block is kept on ground in three different ways, turn by turn. Which of the following is the correct statement about the pressure exerted by this block on the ground?

A. The maximum pressure is exerted when the length and breadth from the base

B. The maximum pressure is exerted when length and height from the base

C. The maximum pressure is exerted when breadth and height form the base

D. The minimum pressure is exerted when length and height form the base

An object is put in three liquids having different densities, one by one. The object floats with and parts of its volume outside the surface of liquids of densities d₁, d₂, and d₃ respectively. Which of the following is the correct order of the densities of the three liquids?

A. d₁> d₂> d₃ B. d₂> d₃> d₁

C. d₁< d₂< d₃ D. d₃> d₂> d₁