THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL

FORM TWO SECONDARY EDUCATION EXAMINATION

0031 PHYSICS Time: 2:30 Hours Friday, 28^th November 2014 a.m.

Instructions

1.  This paper consists of sections A, B, and C.
2.  Answer all questions in the spaces provided.
3.  All writing must be in blue or black ink except drawings which must be in pencil. 
4.  All communication devices and calculators are not allowed in the examination room.
5.   Write your Examination Number at the top right corner of every page.
6.   Where necessary the following constants may be used:

(i)  Acceleration due to gravity, g = 10 m/s²

(ii)  Density of water = 1 g/cm³ or 1,000 kg/m³

1. For each of the items (i) – (xx), choose the correct answer among the given alternatives and write the letter in the box provided.

An electrostatic machine which produces an unlimited supply of sparks by induction is called

(i) The study of matter in relation to energy is called:

1. Chemistry
2. Physicists
3. Biology
4. Physics

(ii) The force which causes tear and wear between machine parts is known as: 

1. friction
2. torsional
3. repulsive
4. magnetic

(iii)  As one goes far away from the earth, the density of air:

1. decreases
2. decreases
3.   remains constant
4. becames greater than its weight

(iv)  Ferry boat floats in sea water because its density is:

1. greater than that of water
2. smaller than that of water
3. the same as its weight
4. greater that its weight

(v)  Study Figure 1 below:

How far from the pivot must the 150g mass be placed for the system tr be in equilibrium?

1. 16.7cm
2. 17.6cm
3. 36.6cm
4. 26.7cm.

(v)  Study Figure 1 below:

How far from the pivot must the 150g mass be placed for the system tr be in equilibrium?

1. 16.7cm
2. 17.6cm
3. 36.6cm
4. 26.7cm.

(vii) The suspended magnetic needle always comes to rest with its axis in a vertical plane called:

1. geographic meridian 
2. magnetic meridian
3. geographic declination
4. magnetic declination.

(viii)As the angle between two plane mirrors increases, the number of I images formed:

1. decreases
2. increases
3. remains constant
4. goes to infinity.

(ix)  Which of the following materials do not allow light to pass through?

1. Glass 
2. Tinted glass
3. Clear plastics
4.  Human bodies

(x) To view objects that are out of direct vision we can use a

1. telescope 
2. microscope
3. periscope 
4. slide projector.
   

(xi)  The process by which water soaks through the cells of rice and beans is called:

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

(xii)  Which of the following is a property of mercury •as a thermometric liquid?

1. Boils at 78⁰C 
2.  Boils at 360⁰C
3. Wets glass
4. Expands rapidly

(xiii)The area under velocity-time graph represents:

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

(xiv)  If the pitch of a micrometer screw gauge is 0.5mm, then its thimble has:

1. 10 equal divisions
2. 100 equal divisions
3. 50 equal divisions
4. 500 equal divisions

(xv)  Which of the following is a magnetic material?

1. Copper
2. Cobalt
3. Zinc
4. Brass

(xvi)  An electrostatic machine which produces unlimited supply of sparks by induction is called:

1. Gold leaf electroscope
2. Electrophorus
3. Generator
4. Speedometer

(xvii) The quantity of electric current caused by excess electrons is called:

1. coulomb
2. electric charge
3. electric charge
4. electrification

(xviii)Which of the following is not a sustainable source of energy?

1. Sun 
2.  Generator
3. Wind
4. Sea wave

(xix)A temperature Of 68⁰C is equivalent to;

1. A. 20 ⁰F 
2. 450F 
3.  154.40F
4.  90.40F

(xx) Action and reaction are equal in magnitude but opposite in direction. This statement refers to;

1. the law of inertia
   
2. newtons second law of motion
3. the principle of moment
4. newtons third law of motion