An open tank contains 1 m deep water with 50 cm depth of oil of specific gravity 0.8 above it. The intensity of pressure at the bottom of tank will be________________?

The total pressure on a plane surface inclined at an angle 9 with the horizontal is equal to_______________?

A. PA

B. pA sin 9

C. pA cos 9

D. pA tan 9

Centre of buoyancy always_________________?

A. coincides with the centre of gravity

B. coincides with the centroid of the volume of fluid displaced

C. remains above the centre of gravity

D. remains below the centre of gravity

Metacentric height for small values of angle of heel is the distance between the________________?

A. centre of gravity and centre of buoy-ancy

B. centre of gravity and metacentre

C. centre of buoyancy and metacentre

D. free surface and centre of buoyancy

A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is________________?

A. 5kN

B. 10kN

C. 15 kN

D. 20 kN

If a vessel containing liquid moves downward with a constant acceleration equal to ‘g’ then_____________?

A. the pressure throughout the liquid mass is atmospheric

B. there will be vacuum in the liquid

C. the pressure in the liquid mass is greater than hydrostatic pressure

D. none of the above