A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is _________________?

Related Mcqs:

1. A piece of metal of specific gravity 7 floats in mercury of specific gravity 13.6. What fraction of its volume is under mercury ?

   A. 0.5
   B. 0.4
   C. 0.515
   D. 0.5
   E. none of the above

2. A piece weighing 3 kg in air was found to weigh 2.5 kg when submerged in water. Its specific gravity is_________________?

   A. 1
   B. 5
   C. 7
   D. 6

3. A metal with specific gravity of o floating in a fluid of same specific gravity a will____________________?

   A. sink to bottom
   B. float over fluid
   C. partly immersed
   D. be fully immersed with top surface at fluid surface
   E. none of the above

4. An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of__________________?

   A. 1
   B. 1.2
   C. 0.8
   D. 0.75
   E. 1.25

5. A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm2 and a volume of 0.039 m3 at 150 kg/cm2. The bulk modulus of elasticity of liquid is___________________?

   A. 400 kg/cm2
   B. 4000 kg/cm2
   C. 40 x 105 kg/cm2
   D. 40 x 106 kg/cm2
   E. none of the above

6. The specific weight of water is 1000 kg/m”_________________?

   A. at normal pressure of 760 mm
   B. at 4°C temperature
   C. at mean sea level
   D. all the above
   E. none of the above

7. The centre of gravity of the volume of the liquid displaced by an immersed body is called ___________________?

   A. centre of gravity
   B. centre of pressure
   C. metacentre
   D. centre of buoyancy
   E. centroid

8. Specific weight of sea water is more that of pure water because it contains_________________?

   A. dissolved air
   B. dissolved salt
   C. suspended matter
   D. all of the above
   E. heavy water

9. If w is the specific weight of liquid and k the depth of any point from the surface, then pressure intensity at that point will be________________?

   A. h
   B. wh
   C. w/h
   D. h/w
   E. h/wh

10. A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will_________________?

    A. increase
    B. decrease
    C. remain same
    D. increase/decrease depending on depth of immersion
    E. unpredictable