- When a car is suddenly brought to rest, a passenger jerks forward because of
- inertia.
- friction.
- gravity.
- momentum

- The mode of transfer of heat between the boiler and the storage tank of a hot water supply system is
- radiation.
- conduction
- convention
- evaporation.

- A rectangular block of tin is 0.5 m long and 0.01 m think. Find the width of the block if its mass and density are 0.45 kg and 9000 kg m
^{-3}respectively.- 0.005 X 0.45 X 9000 M
- 0.45/9000 X 0.005 M
- 0.005/0.45 X 9000 m
- 0.45 X 0.005/9000 m

- A charged conductor usually loses charge gradually by a process called
- induction
- insulation
- conduction
- leakage.

- A cork held under water rises to the surface when released because the upthrust it is
- greater than the weight.
- less than the weight.
- equal to the weight.
- equal to the weight of water displaced

- The width of a metre rule is accurately measured by a
- micrometer screw gauge.
- vernier calliper.
- tape measure
- metre rule.

- A body moves with uniform acceleration if
- its momentum remains constant.
- it covers equal distances in equal times.
- the velocity changes by equal amount in equal times.
- the net force on the body is zero.

- Which one of the following statements is true when a stone of mass 2 kg and that of 1 kg are released from the same point at the same time?’
- Both masses will hit the ground at the same time.
- The 2 kg mass will hit the ground first.
- The 1 kg mass will hit the ground first
- They fall with different speeds.

- Force is given by the product of
- displacement and velocity.
- displacement and mass.
- acceleration and mass.
- velocity and mass.

- A cyclist travelling at a constant acceleration of 2 ms
^{-2}passes through two points A and B in a straight line. If the speed at A is 10 ms^{-1}and the points are 75 m apart, find the speed at B.- 15.8 ms
^{-1} - 17.3 ms
^{-1} - 20.0 ms
^{-1} - 400.0 ms
^{-1}

- 15.8 ms
- A solid, Q, sinks deeper in liquid, N, than in liquid, M, because the
- Up thrust on the solid is greater in liquid N than in M.
- Density of liquid M is greater than that of n
- Density of liquid N is greater than that of M.
- Surface tension of liquid N is less than that of M.

- A crane raises a mass of 500 kg vertically upwards at a speed of 10 ms
^{-1}find the power developed.- 5.0 x 10
^{0} - 5.0 x 10
^{1} - 5.0 x 10
^{2} - 5.0 x10
^{4}

- 5.0 x 10
- The strength of a material depends on the

i) Nature of the material.

ii) Diameter of the material.

iii) Length of the material- (i) only
- (i) and (ii) only
- (ii)and (iii)only
- (i), (ii),and (iii).

- When a crystal of potassium manganate is carefully placed at the bottom of a beaker containing water it spreads uniformly in the water after some days due to
- diffusion
- capillarity
- surface tension
- Brownian motion

- Soap is used to wash clothes because it
- increases capillarity in the clothes
- reduces capillarity in the clothes
- increases surface tension allowing water to penetrate the dirt easily.
- reduces surface tension allowing water to penetrate the dirt easily.

- When potassium dichromate dissolves at the bottom of a water container, it spreads slowly throughout water by a process called
- evapouration
- diffussion
- capillarity
- convection

- A brass rod is rubbed with silk and then brought near a positively charged gold leaf electroscope. The divergence of the leaf will
- increase
- decrease
- not change
- increase slightly and fall back

- A concave mirror can be used as a shaving mirror because when an object is placed between the focus and the pole, the image formed is
- magnified, virtual and erect.
- magnified, real and inverted.
- diminished, real and inverted
- diminished, virtual and erect.

- A mass of 0.2 kg produces an extension of 8 cm in a spring. The force required to produce an extension of 6 cm is
- 0.75N.
- 1.50N.
- 2.70N
- 24.00N.

- The result of rubbing a glass rod with silk and separating them is
- a negative charge on the rod and an equal positive charge on the silk.
- equal amounts of negative charge on both.
- positive charge on the rod and an equal negative charge on the silk.
- no charge on both the rod and the silk

- Light energy is reflected when,
- angle of incidence is greater than angle of reflection.
- angle of incidence is equal to angle of refraction.
- angle of incidence is equal to angle of reflection
- the normal at the point of incidence makes the same angle as the incident ray.

- An object is placed 30cm in front of plane mirror. If the mirror is moved a distance of 6 cm towards the object, find the distance between the object and its image.
- 24 cm
- 36 cm
- 48 cm
- 60 cm

- The product of mass and acceleration is
- force.
- inertia
- velocity
- momentum

- When an inflated ballon is released in air with its neck opened, it will
- rise up.
- drop to the ground instantly
- move in the opposite direction to the escaping air.
- remain in one position.

- A crane lifts 4 bricks per minute through a height of 1.5 m. find the power that is expended if each weighs 100 N.
- 2.5 W
- 10.0 W
- 150.0 W
- 600.0 W.

- A force of 20 N extends a spring by 10 mm. Find the extension, in mm, caused by a mass of 0.5 kg.
- 0.25
- 1.00
- 2.50
- 10.00

- . Surface tension in a liquid may be weakened by
- lowering the temperature.
- adding soap solution
- increasing the amount of liquid.
- increasing the density of the liquid.

- A material that can be rolled into sheets or drawn into wires without breaking is said to be
- strong
- elastic
- ductile
- brittle.

- An object 6 cm high is placed 24 cm from a tiny hole in a pinhole camera. If the distance from the hole to the screen is 8 cm, find the size of the image on the screen.
- 0.2 cm.
- 2.0 cm
- 18.0 cm
- 32.0cm.

- When does the eclipse of the moon occur?
- When the moon is between the sun and the earth.
- When the earth is between the sun and the moon.
- When the sun is totally eclipsed by the moon.
- When a bright ring of sunlight shows round the edge of the moon.

- A body of mass 2 kg initially moving with a constant velocity of 10 ms
^{–1}is subjected to a force of 5N for 2s. The change in momentum of the body in kgms^{-1}is- 10
- 20
- 30
- 50

- When a charged body is brought near a cap of a negatively charged gold leaf electroscope, the
- divergence of the leaf does not change.
- leaf falls if the body is negatively charged.
- leaf diverges if the body is positively charged.
- leaf diverges if the body is negatively charged.

- A straight line through the origin of a velocity-time graph shows that the
- velocity is uniform.
- distance is increasing uniformly
- acceleration is uniform
- motion is retardation.

- When a steadily increasing force is applied to a moving object, all the following change except
- acceleration.
- momentum.
- speed.
- mass.