MPELLA EDUCATION BLOG

PHYSICS FORM TWO REVIEW TEST

Acceleration due to gravity = 10N/kg
Density of water = 1000 kg/m3.

SECTION A (30 marks)

1.      The shortest length that can be measured by vernier callipers is:
a)      0.01mm                       b) 0.1mm
c)      1mm                            d) 10mm

2.      A piece of metal has volume of 0.16cm3 and mass of 0.64g has relative density of:
a)      4g/cm3.                        b) 4
c)      40 g/cm3.                     d) 400 g/m3.

3.      When a body floats in a liquid:
a)      Its weight is less than the upthrust on it.
b)      Its weight is more than upthrust on it.
c)      Its weight is equal to upthrust on it.
d)     Its volume is equal to volume of the liquid displaced.

4.      A relative density bottle has mass of 16g when empty and 24g when filled with a liquid. If it weighs 26g when filled with water, the density of the second liquid is:
a)      0.8g/cm3.                     b) 1.25 g/cm3.
c)      1 g/cm3.                       d) 0.9 g/cm3.

5.      Pond skater can walk on the surface of water because:
a)      Water has skin on its surface.
b)      Surface tension.
c)      Viscosity.
d)     Upthrust is greater than weight of the insect.

6.      Pressure in liquids depends on:
a)      Area                            b) Volume
c)      Depth                          d) Mass.

7.      An object of weight 2000N has dimensions of 1m ´ 0.8m ´ 0.5m. Density of the block is:
a)      50 kg/m3.                     b) 250 kg/m3.
c)      500 kg/m3.                   d) 100 kg/m3.

8.      Weight of an object:
a)      is quantity of matter it contains.
b)      Is same everywhere in universe.
c)      Depends only on volume of the object.
d)     Is equal to gravitational force acting on it.

9.      A ship sinks more in:
a)      denser liquid.              b) Less dense liquid.
c)Deep liquid.                   d) Shallow liquid.

10.  An object is under more pressure:
a)      at the top of liquid.     b) At the bottom of liquid
c)      It is same everywhere.            d) Depends on shape of the object.

11.  Which of the followings is correct for relative density:
a)      Its S.I. unit is kg/m3.
b)      It is ratio of density of an object to density of a liquid.
c)      It is measured by barometer.
d)     It is ratio of mass of a substance to mass of equal volume of water.

12.  1 litre is equal to:
a)      500 cm3.                      b) 2 m3.
c)      1000 cm3.                    d) 1 m3.

13.  Upthrust of a body totally immersed in a liquid is equal to:
a)      the weight of liquid displaced
b)      the mass of liquid displaced.
c)      The volume of liquid displaced.
d)     Apparent weight of the body.

14.  The force of friction between layers of a liquid is called:
a)Surface tension. b) Strain.
c)      Viscosity.                    d) Elasticity.

15.  Equal volumes of different substances have:
a)      different temperatures.           b) Different masses.
c)      Equal densities.                       d) Equal masses

16.  Property of a material to recover its original shape and size after removal of stretching force is:
a)      restoring force.                        b) Elasticity
c)   Plasticity                                 d) Elasticity limit.

17.  Weight of liquid rises or pours is equal to:
a)      weight of the object                b) upthrust
c)   volume of the object.              d) Volume of the liquid rises.

18.  Micrometer screw gauge measures length with the accuracy of:
a)      01.mm.            b) 0.01mm
c)      0.001mm         d) 1 mm.

19.  An swimming pool having dimension of 1m height, 2m width and 5m length is half filled with water. Volume of water is:
a)      2 m3.                b) 5 m3.
c)   10 m3.              d) 20 m3.

20.  A block has weight of 2000N and dimensions 1m ´ 2m ´ 5m. The minimum pressure it exerts to the ground is:
a)      1000 N/m2.                  b) 400 N/m2.
c)      200 N/m3.                    d) 100 N/m3.

SECTION B (30 marks)
21.  Match the following items.

 LIST A LIST B (i)           Diffusion(ii)         Viscosity(iii)       Hydrometer(iv)       Bean balance(v)         Vernier callipers(vi)       A duck doesn’t sink on soft sand.(vii)     An object denser than water.(viii)   A dam is thicker at the bottom. A.          Process of mixing different fluidsB.           Measures liqid pressureC.           Measures density of liquids.D.          Measures diameter of wires.E.           Measures massF.            Measures thickness of a bookG.          Measures weight.H.          Longer base area, smaller pressure.I.             Friction force between layers of a liquid.J.             Skin property of a liquid.K.          Duck has air between its wings.L.           Increasing depth increases pressure.M.          Sinks in the water.N.          Floats on the water.

22.  (a) Pressure exerted by a solid to its base depends on its:
(i) …………………………………………    (ii) …………………………………………

(b)   Pressure of liquid depends on

i) ………………………………………         ii) …………………………………
iii) …………………………………………

(c)    Pressure is defined as ………………………………………………...…………………… and its S. I unit is …………………………………………………………………..

23.  When a body of weight 64N immersed in water it weighs 4.8 N. Therefore the upthrust acting on the body is ……………………………………… and weight of water displaced is …………………………………………….. By finding mass of water displaced we can find volume of water displaced which is …………………………………….. Therefore volume of the object is ……………………………….. and its density is ……………………………….

24.  a) There are three states of matter. Intermolecular forces are weakest in …………………… state. Its molecules are free to move within its limit in ………………………….……… state. They are closely packed together in …………………………………………… state.

b)      ……………………………………………. Is a liquid to reduce friction between moving parts of a machine. Two advantages of friction are:
i)        …………………………………………………………………
ii)      ………………………………………………………………….

25.  a) Random motion of tiny particles suspended in a fluid is called ……………………………
b)      Densities of two mixing liquids can be compared by …………………………………….
c)      Pascal’s transmission of liquid pressure is applied in:
i)        ……………………………………………………….
ii)      ……………………………………………………….

SECTION C (40 marks)

26.  a) Write three differences between mass and weight.
b)      If an object weighs 500N on the earth, will it weigh less, more or same on the moon? Why?
c)      i)    Density of wood is 0.6 g/cm3. What is the mass of wooden block which has volume of 2000 cm3?
i)        If a hole of 500 cm3 is made in the wood what is its new mass.
ii)      If the hole is filled with the lead of density 11 g/cm3. What is mass of the block?

27.  a) State Archimede’s principle.
b)      A stone weighs 560 g when completely immersed in kerosene whose density is 0.8 g/cm3. If the mass of displaced kerosene is 320 g. Calculate:
i)        Volume of the stone
ii)      Density of the stone.
c)      State Law of floatation.

28.  a) i) State Pascal’s transmission of liquid pressure.
ii)      A fish swims at a depth of 5m below the surface of water. Calculate liquid pressure acting on the fish.
b)      Smaller piston of a hydraulic press has an area of 30 cm2 and pushed downward with a force of 100 N. If the area of the longer piston is 750 cm2, find the weight which can be supported.

c)                  Explain why a sharp knife cuts better.