THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATION COUNCIL

 PHYSICS FTNA 2017

SECTION A

(i)Physics, Chemistry and Biology are natural science subjects which need: 

1. practical and theory work for learning
2. only theory for learning
3. practical work only
4. only observation.

(ii) Which of the following is a safety precaution in the Physics laboratory? 

1. Doing experiment in the laboratory
2. Handling of apparatus in the laboratory
3. Use equipmentwith care in the laboratory
4. Do anything in the laboratory.

(iii)Which instrument will you use to measure accurately the inside diameter of a bottle neck?

1. Tape measure
2. Micrometer screw gauge
3. Meter rule
4. Vernier calipers

(iv)Which of the following statements is correct about mass?

1. It is measured by beam balance
2. It is measured by spring balance
3. It varies with place
4. It can be zero

(v)A hydrometer is an instruments used to measure:

1. the volume of liquids
2. the density of liquids
3. the density of solids
4. the volume of solids

(vi)When a body of mass M is lifted through a height h, it possesses the energy known as:

1. kinetic energy
2. chemical energy
3. light energy
4. potential energy

(vii)If the angle between two plane mirrors is 60 ⁰, then the number of images will be:

1. 2
2. 3
3. 4
4. 5

(viii)The presence of charge in a material can be demonstrated by:

1. electrophorus
2. earth wire
3. gold leaf
4. electroscope

(ix)What is the potential difference across a 4 resistor if a current of 0.2A flows through it?

1. 20V
2. 0.8V
3. 0.05V
4. 8V

(x)The process of removing magnetism from a material is known as:

1. polarization.
2. demagnetization
3. magnetization.
4. magnetizing.

(xi)How can a real image be distinguished from a virtual image?

1. Real image is inverted while virtual image is upright.
2. Real image is upright while virtual image is inverted.
3. Virtual image is formed by convergent rays while real image is formed by divergent rays.
4. Real image is formed by convergent rays while virtual image is formed by divergent rays.

(xii)Why is an atom electrically neutral?

1. It consists of equal number of electrons
2. It consists of equal number of protons and electrons.
3. It consists of equal number of electrons and neutrons.
4. It consists of equal number of protons and neutrons.

(xiii)A potential difference of 12V is applied across a resistor of resistance 24 0. The current in a circuits is:

1. 0.5A
2. 2A
3. 0.5?
4. 288?

(xiv)If a North pole is used in the stroking method of magnetization, the end where the stroking begins is:

1. South pole 
2. North pole 
3. West
4.  East.

(xv)Figure 1 shows a ruler balanced by placing the loads at its ends. What is the weight X?

Figure 1

1. 5N
2. 0.5N
3.  IOON 
4.  200N

(xvi)Which of the following is an example of a third class lever?

1. Scissors
2. Fishing pole
3. Pliers
4. Nut cracker

(xvii)Distance between two moving objects will change if:

1. both are moving with same velocity.
2. both have the same acceleration.
3. both have different acceleration.
4. both have no acceleration.

(xviii)Which of the following best illustrates Newtons third law?

1. Inertia
2. Momentum
3. Rocket propulsion
4. Circular motion

(xix)The temperature of a body of -40⁰C in Kelvin (K) scale is:

1.  313K 
2.  233K 
3.  273K 
4.  -40K

(xx) Which of these resources of energy is non-renewable?

1. Wave energy
2. Bio fuels
3. Radiant energy
4. Fossil fuel

2.Match each item in List A with a correct response in List B by writing the letter of the correct response below the number of the corresponding item in List A in the table provided

3.Complete each of the following statements by writing the correct answer in the space provided.

(i)Basic physical proportions of measurement which cannot be obtained from any other proportions by either multiplication or division are called. ...

(ii)Staircases, winding roads uphill, wedges and a screw are physical examples of .....

(iii)The resistance of a body to change its state of rest is called ....

(iv)Objects that emit light when they are hot are called ....

(v) Materials which do not obey Hookes law are known as ......

SECTION B

4.What do you understand by the following terms?

(i) Work 

(ii) Energy 

(iii) Power 

(b) Calculate the power of a pump which can lift 200kg of water through a vertical height of 6m in 10 seconds, given g =10m/s².

(c) Explain the meaning of the following terms:

(i)Kilowatt . 

(ii)Kilojoules . 

5.(a) (i) What is acceleration?

(ii) A car with a velocity of 60km/h is uniformly retarded and brought to rest after 10 seconds. Calculate its acceleration.

(b) (i) Distinguish between distance and displacement.

(ii) Provide one example of the law of inertia of a body.

(c)What is the mass of a body which when acted on by a force of 3N accelerates at 7m/s².

6.State Pascals principle of pressure

(b)What are the three factors that affect the liquid pressure?

(c) Calculate the area of a surface of an object which exerts a pressure of

0.2N/m² when a force acting on it is 2N.

7.Define the term light.

(b) By aid of a diagram state the laws of reflection.

(c)How many images can be formed if two mirrors are set:

(i)At angle of 60 ⁰?

(ii)Parallel to each other?

8.(a) State the principle of moments.

(b) Distinguish between stable equilibrium and unstable equilibrium.

(c) A metre rule is pivoted about a point O as shown in Figure 2 and it is balanced by a load of 0.2N.

Calculate the mass of the rule.

9.(a) What are the uses of the following devices?

(i)Manometer

(ii)Heres apparatus (inverted U-tube) 

(iii) U-tube ....

(iv) Barometer 

(b) Explain why a big elephant manages to walk comfortably in maddy soil without sinking while a human being may sink easily.

(c) Draw a well labelled diagram which demonstrates that liquid pressure depends on depth.

10.(a) Mention three uses of current electricity.

(b) Explain why it is advised to connect bulbs in parallel arrangement during installation of electricity in most buildings.

(c) Form One students at Saku Secondary School who are conducting an experiment to verify Ohms law in the laboratory, were given the following instructions: Connect in series a resistor R, a battery B of two cells, a switch K, an ammeter A and rheostat S. Then connecta voltmeter V across resistor R. Draw a well labelled circuit representing this experiment.