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(iii)         A soldier firing a bullet from a gun experiences a jerking effect as the bullet leaves the gun. This phenomenon is explained by: 

1. Newtons first law of motion. 
2. Newtons second law of motion.
3.  Newtons third law of motion.
4.  Principle of conservation of linear momentum.

Choose Answer : - - A B C D E

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(iv)          Materials which allow light to pass and you can see through are called:

1.  glass
2. opaque
3. translucent
4.  transparent

Choose Answer : - - A B C D E

---

(v)  In order to balance a rigid body on a point, you must first determine

its:

1. balancing point
2. centre of gravity
3. central position of the body
4. neutral point

Choose Answer : - - A B C D E

---

vi) If one cell in a perfect three-cell torch is placed in the opposite direction, then on switching on the torch will:

1.  give normal light. 
2.  give bright light. 
3. give dim light. 
4. not give light.

Choose Answer : - - A B C D E

---

(vii)        The following instruments are used to measure length except:

1. hydrometer
2.   metre rule
3. micrometer screw gauge 
4.  vernier callipers

Choose Answer : - - A B C D E

---

(viii)      Presence of friction in a machine:

1.  causes proper functioning of the machine
2.  increases efficiency of the machine
3. increases life time of the machine 
4.  reduces efficiency of the machine

Choose Answer : - - A B C D E

---

(ix)          You feel more pain if someone with pointed high heels shoes steps on your foot than when the same person with flat shoes steps on you because:

1. the flat shoes are not as heavy as the pointed ones
2. the leather of the shoes has big weight
3.  pressure exerted is greater with flat shoes
4.   pressure exerted is greater with pointed high heel shoes

Choose Answer : - - A B C D E

---

(x)           Gradient of the distance-time graph of a uniformly accelerated motion in a specific direction represents:

1.  acceleration 
2.  deceleration 
3.  speed 
4. velocity

Choose Answer : - - A B C D E

---

(xi)          Evaporation of a liquid does not depend on:

1.  amount of liquid available   
2.  surface area 
3.  temperature   
4. wind

Choose Answer : - - A B C D E

---

(xii)        According to Archimedes Principle, upthrust is equal to the:

1.   apparent weight.
2. volume of fluid displaced.
3. weight of fluid displaced.
4. weight of the displaced object.

Choose Answer : - - A B C D E

---

(xiii)      Suppose you wanted to make strong permanent magnets, which of the following materials would you select?

1.  Cobalt and Iron   
2.  Copper and Cobalt 
3. Copper and Nickel  
4.  Nickel and Cobalt

Choose Answer : - - A B C D E

---

(xiv)      White clothes are preferentially worn in sunny regions than black clothes because they:

1.  absorb heat. 
2. diffuse heat.
3.  reflect heat. 
4. transmit heat.

Choose Answer : - - A B C D E

---

(w) Smell from a rotten dog along the road spreads to the neighbouring houses through a process known as:

1.  capillarity 
2.  diffusion 
3. osmosis 
4. viscosity

Choose Answer : - - A B C D E

---

(xvi) Work and energy have the same SI unit called:

1.  calorie 
2.  joule 
3.  paschal 
4.  watt

Choose Answer : - - A B C D E

---

(Wii) If you comb your dried hair with a plastic or nylon comb, you might observe the comb attracting some small particles. What instrument would you use to determine whether the comb acquired some electric charge?

1.  Ammeter 
2.  Electrophorus 
3.  Gold-leaf electroscope 
4.  Voltmeter

Choose Answer : - - A B C D E

---

(xviii)  The effort that would be needed to operate a 1200N load when the machine has a mechanical advantage of 3 is:

1.  400N       
2.  600N  
3.  BOON 
4.  3600N

Choose Answer : - - A B C D E

---

(xix)      The temperature of hot water was measured using a Fahrenheit thermometer and was found to be 176⁰F. What was its equivalent on the Celsius scale?

1.  80⁰C  
2. 116⁰ C 
3.  259⁰C
4.  348⁰ C

Choose Answer : - - A B C D E

---

(xx)        Bimetallic strip bends when heated because metals:

1.  become softer when heated
2. expand in opposite direction
3. have different expansivities
4. have same expansivities

Choose Answer : - - A B C D E

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THE UNITED REPUBLIC OF TANZANIA MINISTRY OF EDUCATION AND VOCATIONAL TRAINING

FORM TWO SECONDARY EDUCATION EXAMINATION, 2009

0031 PHYSICS 

Time: 2 Hours 

Instructions

1.This paper consists of sections A, B and C.

2.Answer ALL questions

3.Read carefully the instructions given in each section.

4.Write your examination number on every page.

5.Cellphones and calculators are not allowed in the examination room.

6.Whenever necessary use the following constants:

Acceleration due to gravity = 10m/s²

SECTION A

1.Answer all questions in this section by writing the letter of the correct answer beside the question number.

(i)A physicist is generally interested in studying the relationship between:

1. composition and decomposition of matter
2. matter and energy
3. Physics and Chemistry
4. Physics and energy

Choose Answer : - - A B C D E

---

(ii)The measurement of mass using a beam balance uses the principle of:

1. conservation of matter
2. conservation of momentum
3. gravitational pull of the Earth
4. moments

Choose Answer : - - A B C D E

---

(iii) A soldier firing a bullet from a gun experiences a jerking effect as the bullet leaves the gun. This phenomenon is explained by: 

1. Newton’s first law of motion
2. Newton’s second law of motion
3. Newton’s third law of motion
4. Principle of conservation of linear momentum

Choose Answer : - - A B C D E

---

(iv)Materials which allow light to pass and you can see through are called:

1. glass
2. opaque
3. translucent
4. transparent

Choose Answer : - - A B C D E

---

(v)In order to balance a rigid body on a point, you must first determine its:

1. balancing point
2. central position of the body
3. centre of gravity
4. neutral point

Choose Answer : - - A B C D E

---

(vi)If one cell in a perfect three-cell torch is placed in the opposite direction, then switching on the torch will:

1. give normal light
2. give bright light
3. give dim light
4. not give light

Choose Answer : - - A B C D E

---

(vii)The following instruments are used to measure length EXCEPT:

1. hydrometer
2. metre rule
3. micrometer screw guage
4. vernier callipers

Choose Answer : - - A B C D E

---

(viii)Presence of friction in a machine:

1. causes proper functioning of the machine
2. increases efficiency of the machine
3. increases life time of the machine
4. reduces efficiency of the machine

Choose Answer : - - A B C D E

---

(ix)You feel more pain if someone with pointed high heel shoes steps on your foot than when the same person with flat shoes steps on you because:

1. the flat shoes are not as heavy as the pointed ones
2. the leather of the shoes has big weight
3. pressure exerted is greater with flat shoes
4. pressure exerted is greater with pointed high heel shoes

Choose Answer : - - A B C D E

---

(x)Gradient of the distance-time graph of a uniformly accelerated motion in a specific direction represents:

1. acceleration
2. deceleration
3. speed
4. velocity

Choose Answer : - - A B C D E

---

(xi)Evaporation of a liquid does not depend on:

1. the amount of liquid available
2. surface area
3. temperature
4. wind

Choose Answer : - - A B C D E

---

(xii)According to Archimedes’ Principle, upthrust is equal to the:

1. apparent weight
2. volume of fluid displaced
3. weight of fluid displaced
4. weight of the displaced object

Choose Answer : - - A B C D E

---

(xiii) Suppose you wanted to make strong permanent magnets, which of the following materials would you select: 

1. Cobalt and Iron
2. Copper and Cobalt
3. Copper and Nickel
4. Nickel and Cobalt

Choose Answer : - - A B C D E

---

(xiv)White clothes are preferentially worn in sunny regions to black clothes because they:

1. absorb heat
2. diffuse heat
3. reflect heat
4. transmit heat

Choose Answer : - - A B C D E

---

(xv)Smell from a rotten dog along the road spreads to the neighbouring houses through a process known as:

1. capillarity
2. diffusion
3. osmosis
4. viscosity

Choose Answer : - - A B C D E

---

(xvi)Work and energy have the same SI unit called:

1. calorie
2. joule
3. pascal
4. watt

Choose Answer : - - A B C D E

---

(xvii)If you comb your dried hair with a plastic or nylon comb, you might observe the comb attracting some small particles. What instrument would you use to determine whether the comb acquired some electric charge:

1. ammeter
2. electrophorus
3. gold-leaf electroscope
4. voltmeter

Choose Answer : - - A B C D E

---

(xviii)The effort that would be needed to operate a 1200N load with a mchine that has a mechanical advantage of 3 is:

1. 400N
2. 600N
3. 800N
4. 3600N

Choose Answer : - - A B C D E

---

(xix)The temperature of hot water was measured using a Fahrenheit thermometer and was found to be 176°F. What was its equivalent on the Celsius scale?

1. 80°C
2. 116°C
3. 259°C
4. 348°C

Choose Answer : - - A B C D E

---

(xx) Bimettalic strips bend when heated beacause metals:

1. become softer when heated
2. expand in opposite direction
3. have different expansivities
4. have same expansivities

Choose Answer : - - A B C D E

---

SECTION B

2.Match the items in List A with responses in List B by writing the letter of the correct response beside the item number.

List A	List B
Apparent loss in weight Attractive force between molecules of the same substance Load over effort Oil and grease Tangential force on liquid surface Temperature at which solid changes to liquid The moon is between the Earth and the sun Solid changing to vapour directly	Cohesive force Lubricants Mechanical Advantage Melting point Solar eclipse Sublimation Surface tension Upthrust Moon eclipse Velocity Ratio Evaporation Adhesive force

NUMBER OF LIST A	(i)	(ii)	(iii)	(iv)	(v)	(vi)	(vii)	(viii)
LETTER OF LIST B

View Ans

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Answer questions 3 – 6 by filling in the correct answers in the spaces provided.

3.Differentiate between boiling and evaporation:

View Ans

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4.For an object to remain in equilibrium when subjected to a number of parallel forces, the following conditions must be met:

View Ans

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5.a) Three methods commonly used to magnetize magnetic materials are:

View Ans

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b) One similarity between micrometer screw gauges and vernier callipers is that:

View Ans

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6.a) Heat is ____________________________________________

while temperature is ____________________________________________.

b)The efficiency of a machine is always less than 100% because

c)The pressure exerted on an area of 10 m² by a force of 2N is:

View Ans

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SECTION C

7.a) Give the difference between acceleration and deceleration.

b)A car accelerates uniformly from 480 m/s in 50 seconds. It then decelerates to a stop in 100 seconds. Calculate the acceleration and deceleration of the car.

View Ans

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8.a) A block of iron of mass 1kg is placed on top of a horizontal table. If the horizontal force required to just move the block is 1.96N, calculate the coefficient of friction between the two surfaces.

b)The temperature of 2kg of a metal block was raised from 40°C to 90°C. The heat energy used was 38,000J. Calculate the specific heat capacity of the metal.

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9.a) Draw an electric circuit showing proper arrangement of ammeter (A), voltmeter (V), battery of two cells, a fixed resistor (R), and an open switch (S). Show the direction of flow of current (I).

b)Calculate the amount of voltage required to drive a current of 2A through a resistor of 20Ω.

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10.a) Mention types of mechanical energy

b)A body of mass 10kg is raised to a height of 4 metres above the ground in 2 seconds.

(i)Find the energy possessed by the body after raising it.

(ii)What type of energy is possessed by the body?

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