THE UNITED REPUBLIC OF TANZANIA
PRESIDENT’S OFFICE
REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT
COMPETENCY BASED EXAMS
PRE FORM TWO PRE-FTNA ASSESSMENTS
PHYSICS
Time: 2:30 Hours October 2022
Instructions
- This paper consists of sections A, B and C with a total of ten (10) questions
- Answer all questions in the spaces provided
- All other writings should be in blue or black ink except diagram which must be in pencil
- Cellular phones and any unauthorized materials are not allowed in the examination room
- Write your Assessment Number on the top corner of every page as indicated in this paper
- Where necessary the following constant may be used
- Density of water
1000kg/m3 - Acceleration due to gravity 10N/kg or 10m/s2
SECTION A: (15 MARKS)
1. For each of the items (i) — (x), choose the correct answer from the given alternatives and write its letter in the box provided 
(i) The diagram below shoes a pendulum which was released from position A
At what position there is potential energy and kinetic energy?
A. Position A and B
B. Position C and A
C. Position B
D. Position C
(ii) A block of glass with dimensions of 20cm x 3m x 10m was found to weigh 60kg.
What is the density of the block in kg/m3?
A. 0.1
B. 1
C. 2
D. 10
(iii) Khamis poured liquid L into a measuring cylinder and noticed it had a concave meniscus. Which of the following is most unlikely to be liquid L?
A. Ethanol
B. Water
C. Soft drink
D. Mercury
(iv) Kakiku is performing an experiment in the laboratory and required to transfer a specific small volume of liquid. What apparatus would you advise Kakiku to use?
A. Conical flask
B. Density bottle
C. Pipette
D. Burette
(v) Which of the following describes particles in a solid at room temperature?
A. Close together and stationary
B. Close together and vibrating
C. Close together and moving at around random
D. Far apart and moving at random
(vi) Which of these resources of energy is non — renewable?
A. Wave energy
B. Fossil fuels
C. Radiant energy
D. Solar energy
(vii) An actress is applying powder on her face infront of a plane mirror. The image formed is always
A. Laterally inverted
B. At infinity
C. Infront of the mirror
D. Real
(viii) Which of the machines below is a first class lever?
A. Pliers
B. Scissors
C. Wheelbarrow
D. Arrow
(ix) The SI unit for capacitance is.........
A. Farad
B. Joules second
C. Volts
D. Coulombs
(x) A mass of 500g is pushed by the gravitational force towards the centre of the earth by a force of;
- 1N
- 0.5 N
- 5N
- 10N
2. Match the item in LIST A with a correct response in LIST B by writing a letter of a correct response below the corresponding item number in the table provided
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| LIST A |
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| i | Magnetic materials | A | Like poles attract unlike poles repel |
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| ii | Law of polarity | B | Magnetic field is zero | ||||
| iii | Magnetic shielding |
| C | Redirects magnetic lines of force | |||
| iv | Neutral | point | D | Strong ma net | |||
| v | Aluminium | E | Iron nail | ||||
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| F | Paramagnetic | ||||
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| G | Direct neutral | point | |||
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SECTION B: (70 MARKS)
3. (a) (i) State ohm’s law.....................................................................................
(ii) Write its mathematical expression
(b) Two resistors of resistances 15Q and 5Q are connected in parallel across a 37.5V supply, find:-
(i) The total resistance
(ii) The total current in the circuit
(iii) The current through each resistor
(iv) The potential difference across each resistor
4. (a) State pascal principle
(b)A hydraulic brake has a force of 500N applied to a piston whose area is 5m2
(i) What is the pressure transmitted throughout of the liquid?
(ii) If the other piston has an area of 20m2, what is tie force exerted on it?
(c) Give reason, why a tank is thicker at the bottom than at the top?
5. (a) Moments of force depends on two factors. Name them
(b) (i) State principle of moments
(ii) A 100g weight is suspended 45cm from the pivot of a light rod. If a weight W 
is suspended 20cm from the pivot to balance the 100g weight, determine the weight W.
(c) Why is it important to keep the centre of gravity of a motor bus as low as possible?
6. (a) State law of conservation of linear momentum
(b) Differentiate elastic collision from inelastic collision
(c) A body of mass 8kg moving with a velocity of 20m/s collides with another body of mass 4kg moving with a velocity of 10m/s in the same direction. The velocity of 8kg body is reduced to 15m/s after the collision. If the bodies dont stick together after collision, calculate the final velocity of the 4kg body
7. (a) What is mass?
(b) Distinguish between density and relative density
(c) In an experiment to determine the relative density of liquid X, a student obtained the following results after various measurements: Mass of an empty relative density bottle = 15g
Mass of bottle + liquid X = 35g
Mass of bottle + water = 40g Volume of bottle = 25cm3
Calculate:
(i) The density of water
(ii) The density of liquid X
(iii)The relative density of liquid X
8. (a) What do you understand the term energy?
(b) Distinguish between potential energy and kinetic energy of a body
(c) A crate of mass 300kg is raised by an electric motor through a height of 60m in 45seconds. Calculate
(i) Weight of the crate
(ii) The work done by the motor
(iii) The useful power of the motor
9. An object is hung from a spring balance. It weighs 40N in air and 30N when immersed in water.
(a) Calculate the upthrust on the object
(b) Calculate the volume and mass of the object
(c) Calculate its density
(d) What is the volume of the displaced water?
SECTION C: (15 MARKS)
10. (a) Draw a diagram of a screw jack and show a thread (T) and Pitch (P) of a screw
(b)The handle of the screw jack is 35cm long and the pitch of the screw is 0.5cm. What force must be applied to the end of the handle when lifting a load of 2200N, if the efficiency of the jack is 40%
(c) Give One reasons why the mechanical advantage of a I ever is less than one
FORM TWO PHYSICS EXAM SERIES 124
FORM TWO PHYSICS EXAM SERIES 124
THE PRESIDENT’S OFFICE
MINISTRY OF EDUCATION, REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT
COMPETENCE BASED SECONDARY EXAMINATION SERIES
ANNUAL EXAMINATION
FORM TWO
PHYSICS
031
TIME: 2:30 HOURS November, 2021
Instructions
1. This paper consists of sections A, B and C with a total of ten (10) questions.
2. Answer all questions.
3. All answers must be written in the spaces provided.
4. All writings must be in blue or black ink EXCEPT drawings which must be in pencil.
5. Calculators, cellular phones and any unauthorized materials are not allowed in the examination room.
6. Write Your Examination Number on the top right of every page.
7. You may use the following constants in your calculations: (i) Density of water = 1.0 g/cm3 or 1000kg/m3 (ii) Acceleration due to gravity, g = 10m/s2.
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SECTION A: (30 Marks)
Answer all questions in this section
1.For each of the items (i) – (xx), choose the correct answer among the given alternatives and write its letter beside the item number:
(i) One joule work is said to be done when:
A. A force of IN displaces a body by 1cm in direction of force
B. A force of IN displaces a body by 1m in direction force
C. A force of IN displaces a body by 1km in direction of force
D. A force of IN displaces a body by 1mm in direction of force.
(ii) In an electric cell while in use, the change in energy is from:
A. Electrical to mechanical
B. Chemical to mechanical
C. Electrical to chemical
D. Chemical to electrical.
(iii) Diffusion occurs more quickly in a gas than in a liquid because:
A. The liquid contains a layer on its surface
B. The gas contains semi-permeable membrane
C. The gas molecules is small in size compared to the liquid molecules
D. The speed of molecules in gas is greater than in liquid.
(iv) In a process of charging by induction in static electricity:
A. A conductor is rubbed with an insulator
B. A charge is produced by friction
C. Negative and positive charges are separated D.A positive charge induces a positive charge.
(v) For an ideal machine, the ratio of mechanical advantage and velocity ratio is:
A. Greater than one
B. Less than one
C. Equal to one
D. Depends on value of load.
(vi) An object weighs 12N in air and 9N when totally immersed in water. The relative density of the object is:
A. 3g/cm3
B. 4g/cm3
C. 3
D. 4.
(vii) The rise of a liquid level in a tube due to cohesion and adhesion forces is called:
A. Capillarity
B. Surface tension
C. Meniscus
D. Osmosis.
(viii) The hydrometer is calibrated in such a way that has small number at the top of its stem, this is because:
A. It sinks more in less denser liquids than in more denser liquids
B. It sinks less in less denser liquids than in more denser liquids
C. To enable it to stand up right when taking measurements
D. To make it more sensitive.
(ix) The density of pure solid copper is 8.94g/cm3. What volume does 5 kilograms of copper occupy?
A. 559.3cm3
B. 0.5593cm3
C. 44.7cm3
D. 1.788cm3.
(x) The temperature of Dar es Salaam town was 32oC. This is equivalent to….
A. 306K
B. 241K
C. 305K
D. 205K.
(xi) An instrument which can be used to observe objects out of direct vision is called:
A. Microscope
B. Periscope
C. Plane mirror
D. Telescope.
(xii) A ball of mass 0.6kg is kicked vertically upwards up to a height of 6m. The potential energy acquired by the ball is:
A. 0.36J
B. 3.6J
C. 36J
D. 360J.
(xiii) A measuring cylinder contains liquid to a level X. An object of volume Z is totally immersed in the liquid contained in the cylinder. The new reading of the liquid level will be:
A. Z
B. X-Z
C. X+Z
D. Z-X.
(xiv) A soldier firing a bullet from a gun experience a jerking effect as the bullet leaves the gun. This phenomenon is explained by:
A. Newton’s first law of motion
B. Newton’s second law of motion
C. Newton’s third law of motion
D. Principle of conservation of linear momentum.
(xv) The image formed in a plane mirror is always:
A. Virtual, magnified, the same size
B. Magnified, vertical and lateral inverted
C. Diminished, real, lateral inverted
D. The same size as object, virtual and upright.
(xvi) Which instrument is used to measure diameter of a constantan wire SWG 28?
A. Vernier calipers
B. Tape measure
C. Micrometer screw gauge
D. Engineer calipers.
(xvii) The property of material to return to its original size is called:
A. Compression
B. Elasticity
C. Plasticity
D. Elastic limit.
(xviii) The magnetic needle, free to turn in a vertical plane, is suspended first at the earth’s South magnetic pole and then at a point on the magnetic equator. The respective angles between the needle and horizontal are:
A. 0o and 0o
B. 70o and 70o
C. 0o and 90o
D. 90o and 0o.
(xix) The acceleration of a moving object may be found from:
A. The area under its velocity – time graph
B. The slope of the velocity – time graph
C. The area under its distance – time graph
D. The slope of the distance – time graph.
(xx) The force of friction between layers of liquid is called:
A. Surface tension
B. Viscous force
C. Compressional force
D. Torsional force.
2. Match the items in LIST A with the responses in LIST B by writing the letter of the corresponding response beside the item number in the answer sheet provided.
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| LIST A | LIST B |
| (i) (ii) (iii) (iv) (v) | Frictional force Viscosity Gravitational force Torsional force Stretching force | A. A book experiences a force directed towards the earth B. Force passed through a rope C. Resistance of honey to flow D. Resistance to the movement of brick on ground E. Twisting ruler between both hands F. Support force exerted upon an object |
Answers:
| LIST A | (i) | (ii) | (iii) | (iv) | (v) |
| LIST B |
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3. Complete each of the following statements by writing the correct answer in the space provided:
(i) Small deviation of measured value from true value is called ____________________
(ii) Charging without contact is called ________________________________________
(iii) Potential difference of a cell when is not connected in complete electric circuit is
_________________________________________________________________
(iv) A device used to detect the sign of charges in a body is ______________________
(v) The material placed between capacitor’s plates is called ______________________
SECTION B: (50 Marks)
Answer all questions in this section
4. (a) A body dipped in a liquid experiences an upthrust. Explain three factors on which the upthrust depends:
(i) _______________________________________________________________
(ii) _______________________________________________________________
(iii) _______________________________________________________________
03 marks
(b) An object was totally immersed in a liquid contained in a vessel. The two opposite forces acting on the object are.
(i) ______________________________________________________________
(ii) ______________________________________________________________
(c) State how the forces in (b) above should be to make an object float:
_____________________________________________________________________
__________________________________________________________________________________________________________________________________________
02 marks
4. (d) When a body is totally immersed in a liquid it weighs 3.2N. If the weight of liquid displaced is 1.5N. Find the weight of a body in air.
_____________________________________________________________________ _____________________________________________________________________
_____________________________________________________________________
03 marks
5.(a) Asha opens a bottle of perfume at the front of the room. After few minutes the smell reaches the whole of the room. Explain why is it happening.
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
04 marks
(b) Why shriveled prune placed in water swells?
_____________________________________________________________________
_____________________________________________________________________
03 marks
(c) Draw the magnetic field between two unlike magnetic poles that are close to one another.
6. (a) State the principle of moments
_____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
02 marks
(b) Give two ways that a mechanics can use to increase spanners turning effect.
(i) _______________________________________________________________
_______________________________________________________________
(ii) _______________________________________________________________
_______________________________________________________________
02 marks
(c) Draw the diagrams showing three different types of common equilibriums
@02 marks
7. (a) Explain the meaning of linear momentum of a body
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
02 marks
(b) How is a force is related to the linear momentum of a body?
_____________________________________________________________________ _____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
(c) A body has mass of 50kg and a linear momentum of 3000kg ms-1. Find its:
(i) Velocity of the body
03 marks
(ii) Kinetic energy of the body
02 marks
8.(a) State the two common applications of an atmospheric pressure.
(i) _______________________________________________________________
(ii) _______________________________________________________________
02 marks (b) Briefly explain why a woman wearing shoes with pointed heels is more likely to cause damage to a wooden floor than an elephant?
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
03 marks
(c) A rectangular tank measures 3m by 2m contains water to a height of 2m. Find
(i) The pressure on the base of the tank. 03 marks
(ii) Thrust on the base of the tank. 02 marks
SECTION C: (20 Marks)
Answerall questions in this section
9.(a) Draw the pulley system with the velocity ratio of 4.
02 marks
(b)A machine of velocity ratio of 4 needs 2000J of energy to lift the load of 400N through a vertical distance of 2.5m.
(i) Determine the work out put 02 marks
(ii) Determine the efficiency of the machine
(b) (iii) Mechanical advantage of a machine 02 marks
(c) A screw jack has a screw pitch of 4mm and the effort arm of 16cm. Determine the percentage efficiency of this screw jack, if it needs an effort of 50N to lift a load of 750N?
10.Three capacitors of 3 microfarad, 2 microfarad and 6 microfarad are connected in series when a battery of 30Volts is connected to this combination.
(i)Draw the electric circuit of this combination. 04 marks
(a) (ii) Find the charge in 3 microfarad 03 marks
(b) An ohmic conductor has a voltage drop of 9 volts measured across it. The current in the conductor is 3A. What is the resistance?
FORM TWO PHYSICS EXAM SERIES 79
FORM TWO PHYSICS EXAM SERIES 79
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