PRESIDENTโS OFFICEโREGIONAL ADMINISTRATION AND LOCAL GOVERNMENT
THE CITY COUNCIL OF DODOMA (CCD)
FORM III TERMINAL EXAMINATION 2022
CODE: 031- PHYSICS
TIME: 3:00 HRS
INSTRUCTIONS:
This paper consists of three section A, B and C
Answer all Questions in section A and B and two questions from section C
Follow instructions given in each section
Wherever calculations are involved you are required to show clearly all steps in a systematic manner.
Write your Examination number on every page of the answer booklet(s)
Wherever necessary use the following constants:
Acceleration due to gravity, g= 10m/sยฒ
Density of water = 1g/cmยณ
Specific heat capacity of water, C= 4200J/kgยฐC
Boiling point of water at S.T.P = 373K
Specific heat capacity of the metal = 0.4J/gยฐC
SECTION A: (15 marks)
Answer all questions from this section.
1. For each of the items (i) โ (x), choose the correct answer among the given alternatives and write its letter beside the item number.
(i)A rotten dead dog smell from the fence of the school spread toward classroom which process take place there
Diffusion
Fusion
Osmosis
Osmotic pressure
Brownian motion
(ii)The specific latent heat of fusion of a substance is defined as energy require to:
Change a unit mass of the substance from solid to liquid
Change a unit mass of substance from solid to liquid at constant temperature
Change the mass of substance from solid to liquid at constant temperature.
Cause a unit temperature rise of a substance.
Cause a unit mass of water to freeze at 00C
(iii)Which of the following are best examples of non- magnetic metals?
Iron and steel
Aluminum and Zinc
Nickel and Cobalt
Nickel and steel
Iron and cobalt
(iv)Most of landcruiser v8 is more equilibrium because:
The body moves with uniform speed
The net force acting on the body is zero
The net force acting on the body horizontally is zero
The net force acting on the body vertically is zero
Its centre of gravity is low positioned.
(v)If the e.m.f and Internal resistance of a battery are 1.5v and 0.4โฆ respectively, the current that this battery will to a resistor of 14.6โฆ will be:-
15A
10A
1.0A
0.1A
1.5A
(vi)The apparent weight of a body is:
Obtained as a spring balance is immersed in water.
Obtained as the body is totally immersed in a fluid.
Is the apparent loss of weight.
Obtained as a spring balance is suspended in air.
Obtained as the body is partially in fluid.
(vii) The following is reason why objects in the air tend to fall at the same time:
They have the same weight
There is usually no resistance in the air.
Acceleration due to gravity is the same.
There is resistance in the air
They have no weight
(viii) A convex mirror always forms;
Virtual images only
Inverted real images only
Real images only
Magnified virtual images only
Real and virtual image.
(ix)The like poles repel each other. Unlike poles attract each other.This is first law of:
Electrostatic
Inertia
Magnetism
Current
Energy
(x)A wire of uniform cross- sectional area has a length of 10m, a resistance of 2โฆ and a resistivity of 2 x 10-7โฆm. The cross-sectional area in mยฒ is:
1 x 10-6
2 x10-4
0.5 x 10-5
1 x 10-5
2 x 10-4
Qns | i | ii | iii | iv | v | vi | vii | viii | ix | x |
Ans |