- Which of the following shows the correct stagesin an internal combustion engine
- compression----power----exhaust----induction
- Exhaust----induction----compression----power
- induction---power----compression----exaust
- Induction----compression----power----exhaust

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

- A dull black surface is a good

i)absorber of heat energy

ii)emitter of heat energy

iii)reflecter of heat energy- (i) only
- (i) and (ii) only
- (ii) and (iii)only
- (i) and(ii) and (iii)

- Calculate the efficiency of a pulley system with velocity ratio 3 if the minimum effort needed to raise a load of 210N is 90N
- 90/(2108*3*100)
- (90*30)/(210*3*100)
- (210*3*100)/90
- (210*100)/(90*3)

- Turblulent flow of a fluid in a pipe may be caused by

i)making th pipe narrow

ii0laying the pipe steeply

iii)making the fluid to flow slowly and uniformly- (i) only
- (i) and (ii) only
- (ii) and (iii) only
- (i),(ii) and (iii)

- 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 1.5m.Find the power that is expended if each brick weighs 100N
- 2.5W
- 10.0W
- 150.0W
- 600.0W

- A force of 20N extends a spring by 10mm.Find the extension,in mm caused by a mass of 0.5kg
- 0.25
- 1.00
- 2.50
- a10.00

- Which of the following makes a bulb light ?
- Resistance
- Voltage
- Current
- Power

- A piece of metal of mass 120g is placed in a 100ml measuring cylinder containing 20ml of water. Find the density of the metal if the water level rises to the 50ml mark.
- 1.2g/cm
- 2.4g/cm
- 4.0g/cm
- 6.0g/cm

- A block of wood of volume 40cm
^{3}floating in water with only half of its volume submerged. if the density of water is 1000kgm^{-3},determine the mass of the wood under water.- 40 x 1000kg
- 20 x 1000kg
- 40 x 10
^{-6}x 500kg - 20 x 10
^{-6}x 500kg

- Surface tension in a liquid may be weakenrd by
- lowering the temprature
- adding soap solution
- increasing the amount of fluid
- increasing the density of the fluid

- A vibrator produces a soundwave that travels 900m in 3s.If the wavelength of the wavelength of the wave is 10m,find the frequency of the vibrator
- 30Hz
- 270Hz
- 300Hz
- 3000Hz

- A magnet can be made to loose its strengh by

i)heating

ii)throwing it violently

iii)putting it in a solenoid carring direct current- (i) and(iii) only
- (ii) and (iii) only
- (i) and (ii) only
- (i),(ii) and (iii)

- A given mass of gas occupies a volume of 200cm
^{3}at a temprature of 27^{0}C and a pressure of one atmosphere.Find the volume when its temprature rises to 54^{0}C at a constant pressure.- (200x1x327)/300
- (300x327)/(200x1)
- (200x327)/(327x1)
- (327x1)/(200x300)

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

- Radiation is the transfer of heat
- in a liquid which involves the movement of the molecules
- from one place to another by means of electromagnetic wave
- through a material medium without the bulk movement of the medium
- through a fluid which involvevs the bulk movement of the fluid itself

- The distance between the fixed points on a mercury in glass thermometer is 25
^{0}C if the mercury thead is 8cm long. What is the temperature on the thermometer?- 100X25/(8)
- 100x8/(25)
- 25x8/(100)
- 100/(25x8)

- When potassium permanganante dissolves at the bottom of a water container,it spreads slowly throughout water by a process called
- evaporation
- diffusion
- capillarity
- convection

- The basic difference between transverse and longitudinal waves is in
- amplitude
- wave length
- direction of vibration
- medium through which the waves travel

- which one of the followig statements is true when a stone of mass 2kgs and thatof 1kg are released from the same point at the same time?
- both masses will hit the ground at the same time
- the 2kg mass will hit the ground first
- the 1kg mass will hit the ground first
- they fail with different speeds

- In a ripple tank,constructive interference occurs when
- the wave is stationary
- a crest overlaps with a trough
- a crest overlaps with a crest
- the wave strikes a barrier

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

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

- 15.8ms
- A body moves uniform acceleration if
- its momentum remains costant
- it covers equal distance with equal time
- the velocity changes by equal amount in equal times
- the net force on the body is zero

- The direction of induced current in a conductor moving in a magnetic field can be predicted by applying
- Faraday's law
- Maxwell's law
- Fleming's left hand rule
- Fleming's right hand rule

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

- Two appliances are rated 240V 2KW and 240V 500W find the cost of running these appliances for 3 hours if one unit of electricity costs Shs 70
- shs 105
- shs175
- shs 420
- shs 525

- 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 totaly eclipsed by the moon
- when the bright ring of the sunlight shows round the edge of the moon

- A rectangular block of tin is 0.5m long and 0.01m thick. Find the width of the block if its mass and density are 0.45kg and 9000kgm respctively
- 0.005x0.45x9000m
- 0.45\(0.45x9000)m
- 0.005\(0.45x9000)m
- 0.45x0.005/(9000)m

- Which one of the following bands has a wavelength greater than that of visible spectrum?
- Gamma
- X-rays
- Ultraviolent
- Infrared

- A body of mass 2kg initially moving with a constant velocity of 20m/s is subjected to a force of 5N for 2s. The change in momentum of the body in kgm/s 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

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

- How long does it take an alternating p.d of peak value 10V and frequency 50Hz to make one cycle?
- 0.02s
- 1.20s
- 5.00s
- 500.00s

- An electric bulb has a resistance of 960~ Find the electrical power expended when connected across a 240~ V supply
- 960/(240x240)
- 240/960
- 960/240
- (240x240)/960

- Which one of the following materials can be elecrified by friction
- plastic pen
- silver rod
- copper rod
- wet wood

- A charged conductor usually loses charge gradually by a process called
- 2.0 V
- 3.3v
- 12.0V

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

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