(i) Physics is:

1. The study of science
2. The relation of matter
3. The study of matter in relation to energy
4.  None of the above

The SI unit of length is:

1. Ammeter 
2.  Galvanometer
3. Micrometer screw gauge
4. metre

(iii) umbra refers to;

1. partial shadow
2. total shadow
3. mid night
4. moon

(iv)        The pressure in liquid depends on:

1.   Weight and energy
2. Liquid and container
3.  Depth and density of liquid 
4.  Volume and height

(v)          When a narrow glass tube is dipped into mercury:

1.  The adhesion of molecules of mercury is stronger than the cohesion of molecules of mercury.
2. The meniscus of mercury in a glass vessel curves upwards.
3. Mercury experiences a downward force equal to its weight.
4. The level of mercury in the tube drops below that of the surrounding.

(vi)Physics is applied in many fields such as:

1.  Medicine and Engineering
2. Matter and examinations
3. Air and books
4. None of the above

(vii)         The quantity of energy possessed by a body which causes the  vibrations of its molecules is:

1. Temperature     
2.  Energy
3. Heat 
4.  Current

(viii)       The temperature of Dodoma town was 40⁰C. This is equivalent to:

1. 313 Kelvin 
2. 160 Kelvin 
3. 240 Kelvin 
4.  120 Kelvin

(ix)          An ammeter is an instrument for measuring:

1. Length   
2. Resistance 
3.  Capacitance   
4.  Current

Relates temperature and pressure at constant volume:

1. Boyles law   
2.  Pressure law
3. Charles law
4.  Gas law

(xi)          A piece of metal of volume 0.24cm³ and mass 0.72 has a relative density (R.D.) of:

1.  3.0g/cm³ 
2.  3.0 C.
3. 3.0kgm³ 
4. 0.3

(xii)         The presence ofpositive and negative charge in a body can be detected by using:

1.   Voltmeter 
2.  Electroscope 
3.  Hydrometer  
4. Compass

(xiii)       A body which sinks in water has its density:

1.   Less than that of water
2.  Larger than that of water
3. Equal to that of water
4.   Less or equal to that of water

(xiv)       A ball and ring experiment is used to verify the knowledge of:

1. Expansion of substance
2. Elasticity of substance
3.  Conductivity of substance 
4.  Evaporation of substance

(w) A vernier scale reads 0.2mm when closed and 5.7mm when used to measure the diameter of a cylindrical body. What is the true diameter of the cylindrical body?

1. 0.2mm B
2.  5.9mm 
3. 5.5mm 
4.  5.7mm

(xvi) The mechanical advantage of a machine is 4. Find the effort needed to operate a machine of the load 1000N.

1.  40N    
2.  2800N
3.  250N 
4.  1999N

(Wii) Food in a refrigerator is cooled by:

1.  Osmosis
2. Diffusion
3. Evaporation
4.  Transpiration

(xviii)    A black cloth is the material which is:

1.   Transparent 
2.  Opaque
3.  Translucent 
4.   Dark

(xix)       The velocity ratio of a system of 3 pulleys is:

1. 0.5
2. 3
3. 6
4. 1

(xx)         A lever which has its load between the effort and fulcrum is said to be:

1.  First class lever
2. Second class lever 
3.  Third class lever
4.  None of the above

THE UNITED REPUBLIC OF TANZANIA MINISTRY OF EDUCATION AND VOCATIONAL TRAINING

FORM TWO SECONDARY EDUCATION EXAMINATION, 2005

0031 PHYSICS 

Time: 2 Hours 

Instructions

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

2.Answer ALL questions

3.Question in section C should be answered on separate sheets of paper provided. In your calculations you are required to show clearly all the steps of your work in a systematic manner.

4.Whenever necessary use the following constants.

Density of water 1 g/cm³ or 1000 Kg/m³.

Acceleration due to gravity = 10 m/s²_.

STP means T = 273 K, P = 760 mmHg.

Density of mercury = 13.6 g/cm³ or 13600 Kg/m³.

Specific Heat Capacity of water = 4200 J/kgK

SECTION A

1. This section consists of twenty (20) multiple choice items. Answer ALL questions in this section by writing the letter of the correct answer in the box provided for each item.

(i)Physics is:

1. The study of Science.
2. The relation of matter.
3. The study of matter in relation to energy.
4. None of the above.

(ii) The SI unit of length is: 

1. Ammeter.
2. Galvanometer.
3. Micrometre screw gauge.
4. Metre.

(iii)Umbra refers to:

1. Partial shadow.
2. Total shadow.
3. Midnight.
4. Moon.

(iv) The pressure in liquid depends on: 

1. Weight and energy.
2. Liquid and container.
3. Depth and density of liquid.
4. Volume and height.

(v)When a narrow glass tube is dipped into mercury:

1. The adhesion of molecules of mercury is stronger than the cohesion of molecules of mercury.
2. The meniscus of mercury in a glass vessel curves upwards.
3. Mercury experiences a downward force equal to its weight.
4. Level of mercury in the tube drops below that of the surrounding.

(vi)Physics is applied in many fields such as: 

1. Medicine and Engineering.
2. Matter and examinations.
3. Air and books.
4. None of the above.

(vii)The quantity of energy possessed by a body which causes the vibrations of its molecules is:

1. Temperature.
2. Energy.
3. Heat.
4. Current.

(viii) The temperature at Dodoma town was 40°C. This is equivalent to:

1. 313 Kelvin.
2. 160 Kelvin.
3. 240 Kelvin. 
4. 120 Kelvin.

(ix) An ammeter is an instrument for measuring: 

1. Length.
2. Resistance.
3. Capacitance.
4. Current.

(x) Relates temperature and pressure at constant volume: 

1. Boyle’s law.
2. Pressure law.
3. Charles’ law.
4. Gas law.

(xi) A piece of metal of volume 0.24 cm³ and mass 0.72 g has a relative density (R.D.) of: 

1. 3.0 g/cm³.
2. 3.0.
3. 3.0 kg/m³.
4. 0.3.

(xii)The presence of positive and negative charges in a body can be detected by using: 

1. Voltmeter.
2. Electroscope.
3. Hydrometer.
4. Compass.

(xiii) A body which sinks in water has its density: 

1. Less than that of water.
2. Larger than that of water.
3. Equal to that of water.
4. Less or equal to that of water.

(xiv) A ball and ring experiment is used to verify the knowledge of:

1. Expansion of substance.
2. Elasticity of substance.
3. Conductivity of substance.
4. Evaporation of substance.

(xv) A Vernier scale reads 0.2 mm when closed and 5.7 mm when used to measure the diameter of the cylindrical body. What is the true diameter of the cylindrical body? 

1. 0.2 mm.
2. 5.9 mm.
3. 5.5 mm. 
4. 5.7 mm.

(xvi) The mechanical advantage of a machine is 4. Find the effort needed to operate a machine of the load 1000 N: 

1. 40 N.
2. 2800 N.
3. 250 N.
4. 1999 N.

(xvii) Food in a refrigerator is cooled by:

1. Osmosis.
2. Diffusion.
3. Evaporation.
4. Transpiration.

(xviii) A black cloth is a material which is: 

1. Transparent.
2. Opaque.
3. Translucent.
4. Dark.

(xix) The velocity ratio of a system of 3 pulleys is?

1. ½.
2. 3.
3. 6.
4. 1.

(xx) A lever which has its load between the effort and fulcrum is said to be: 

1. First class lever.
2. Second class lever.
3. Third class lever.
4. None of the above.

SECTION B

2.Match the following items by writing the letter of the correct meaning from list B against the number of the item in list A.

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

3.a) The efficiency of a machine is _________________________________________________

b)The angle between true north and the compass needle direction is known as _____________

c)Give two examples of the effects of surface tension

4.a) (i) What is the anomalous expansion of water?

(ii) Like charges repel and unlike charges attract is the ______________________________

b)Differentiate between latent heat of fusion and latent heat of vaporization.

5.a) Two examples of magnetic materials are:

b)Name the material which when rubbed with a dry cloth becomes:

(i)Negatively charged ____________________________________________________

(ii)Positively charged ____________________________________________________

6.a) Mention three states of matter.

b) A car of mass 150 kg is moving with a velocity of 2 m/s.

(i)The energy possessed by the car in joules is

(ii)The type of energy possessed by a car is

SECTION C

Answer ALL questions in this section on separate sheets of paper provided.

7.a) Define temperature of a body.

b)What happens when a solid object is heated?

c)A piece of metal of specific heat capacity of 840 J/Kg°C and mass of 30 g is heated from the temperature of 100°C to a temperature of 120°C. Find the quantity of heat used.

8.a) Define specific heat capacity

b)State Newton’s first law of motion.

c)A car travels with uniform velocity of 30 m/s for 5 seconds and then comes to rest in the next 10 seconds with a uniform deceleration.

(i)Draw a velocity-time graph of the motion.

(ii)Find the total distance travelled.

9.a) State Ohm’s law.

b)In the diagram below calculate the value of R.

c)A potential difference of 12 V is applied across parallel resistors of 4 ohms and 6 ohms. Calculate the current in the circuit.

10.a) A screw jack with a pitch of 0.2 cm and handle of length 50 cm is used to lift a car of weight 12000 N. If the efficiency of the screw is 30%, calculate:

(i)The velocity ratio.

(ii)Mechanical advantage.

(iii)The effort used to raise the car.

b) Show how the neutral point due to two bar magnets can be formed.