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Physics
NECO SSCE 2002
Gas Laws & Heat Transfer
The silvered walls of a vacuum flask minimise loss of heat due to
A
conduction and convection
B
conduction only
C
convection and radiation
D
convection only
E
radiation only
medium Difficulty
Verified Correct Answer: Option E
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #42899)
Physics
NECO SSCE 2002
Temperature, Thermometry & Thermal Expansion
The phenomenon of photoelectric effect is NOT used in
A
automatic doors
B
bimetallic strip thermometers
C
light meters in cameras
D
setting off burglar alarms
E
sound production from film tracks.
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #42900)
Physics
NECO SSCE 2002
Waves, Sound & Vibrations
Which of the following is a percussion instrument?
A
bell
B
flute
C
guitar
D
piano
E
organ
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #42901)
Physics
NECO SSCE 2002
Magnetism, Electromagnetism & AC Circuits
A transformer supplies 12V when connected to a 240V mains. If the transformer takes 0.120A from the mains when used to light a 12V, 24W lamp, what is its efficiency?
A
57.20%
B
66.60%
C
83.30%
D
92.50%
E
100%
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #42902)
Physics
NECO SSCE 2002
Atomic, Quantum, Nuclear Physics & Electronics
Which of the following is/are TRUE of nuclear fission?
I. A heavy nucleus is split into two nuclei of comparable masses.
II. Two light nuclei are joined together to form a heavier nucleus.
III. The total mass of the products is less than that of the reactants.
A
I only
B
II only
C
III only
D
I and III only
E
II and III only
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #42903)
Physics
NECO SSCE 2002
Lenses & Optical Instruments
A converging lens of focal length 5cm forms a virtual image which is 20cm from the lens. How far from the lens is the object?
A
2.0cm
B
4.0 cm
C
6.7cm
D
20.0cm
E
25.0cm
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #42904)
Physics
UTME / JAMB 2002
Newton's Laws, Momentum & Collisions
Solution
A bead travelling on a straight line wire is brought to rest at 0.2 by friction. If the mass of the bead is 0.01kg and the coefficient of friction between the bead and the wire is 0.1, determine the work done by the friction
[g = 10ms\(^2\)]
A
2 x 10\(^{-4}\)
B
2 x 10\(^{-3}\)
C
2 x 10\(^{-1}\)
D
2 x 10\(^2\)
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
Work done by friction = Friction force x displacement from the relation, f = \muR
where \mu = coefficient of friction ; R = normal reaction
=> F = \mu mg (R = mg)
= 0.1 x 0.01 x 10
∴ work done = F x displacement
= 0.1 x 0.01 x 10 x 0.2
= 0.002
= 2 x 10\(^{-3}\)
Source: Myschool Past Questions Archive (Record #12264)
Physics
NECO SSCE 2002
Lenses & Optical Instruments
A converging lens of focal length 5cm forms a virtual image which is 20cm from the lens. How far from the lens is the object?
A
2.0cm
B
4.0 cm
C
6.7cm
D
20.0cm
E
25.0cm
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Official Exam / Past Question Archive
Physics
UTME / JAMB 2002
Current Electricity & Electric Circuits
Solution
Explain the rise of water in a glass capillary tube using the kinetic theory.
medium Difficulty
Verified Correct Answer: Option
Physical Principles & Numerical Solution
Water and glass are made up of molecules and since the force of attraction between water molecules and glass molecules are stronger than that between water molecules, there is rise in a glass capillary tube.
Source: Myschool Past Questions Archive (Record #54079)
Physics
UTME / JAMB 2002
Current Electricity & Electric Circuits
Solution
(a) What is diffusion?
(b) State two factors which affect the rate of diffusion.
medium Difficulty
Verified Correct Answer: Option
Physical Principles & Numerical Solution
(a) Diffusion is the process by which different forms of fluids mix with one another due to the kinetic nature of their particles.
(b) Factors affecting rate of diffusion are: Density, Temperature, Pressure and Concentration of the substance.
Source: Myschool Past Questions Archive (Record #54080)
Physics
UTME / JAMB 2002
Elasticity, Density, Pressure & Fluids
Solution
(a) Explain elasticity of a substance.
(b) Define elastic constant.
medium Difficulty
Verified Correct Answer: Option
Physical Principles & Numerical Solution
(a) Elasticity is the ability for a body to regain its original shape and size after undergoing a stretching or compression force.
(b) Elastic constant is the force that produces a unit extension of the material.
Source: Myschool Past Questions Archive (Record #54081)
Physics
UTME / JAMB 2002
Elasticity, Density, Pressure & Fluids
A wire is gradually stretched until it snaps. Sketch a load-extension graph for the wire and on the graph indicate the
(a) elastic limit;
(b) yield point;
(c) maximum load;
(d) breaking point.
medium Difficulty
Verified Correct Answer: Option
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option .
Source: Myschool Past Questions Archive (Record #54082)
Physics
UTME / JAMB 2002
Linear Motion, Projectiles & Kinematics
Solution
(a) Define horizontal range of a projectile.
(b) The horizontal range, R, of a projectile is given by the equation R = \(\frac{u^2 sin 2\theta}{g}\)
(i) what does \(\theta\) in the equation represent?
(ii) for what value of \(\theta\) would R be maximum?
medium Difficulty
Verified Correct Answer: Option
Physical Principles & Numerical Solution
(a) Horizontal range is the horizontal distance between the point of projection and the point of landing
(b) (i) \(\theta\) = angle of projection
(ii) R is maximum when \(\theta\) = 45^\circ
Source: Myschool Past Questions Archive (Record #54083)
Physics
UTME / JAMB 2002
Current Electricity & Electric Circuits
Solution
Explain the action of direct electric current in an electrolytic process with a dilute solution of sodium chloride as electrolyte
medium Difficulty
Verified Correct Answer: Option
Physical Principles & Numerical Solution
Ions present in dilute sodium chloride solution are -H\(^-\), OH\(^-\) and Cl\(^-\) + Na\(^+\). When D.C is passed through it positive ions H+ and Na+ are attracted to the cathode while negative ions OH\(^-\) and CI\(^-\) are attracted to the anode.
Source: Myschool Past Questions Archive (Record #54084)
Physics
UTME / JAMB 2002
Current Electricity & Electric Circuits
Solution
(a) What is meant by;
(i) anode;
(ii) cathode, as used in electrolysis?
(b) List the ions involved in an electrolytic process with dilute tetraoxosulphate (VI) acid as electrolyte
medium Difficulty
Verified Correct Answer: Option
Physical Principles & Numerical Solution
(a)(i) Anode - is positive electrode which attracts negative ions of the electrolyte.
(ii) Cathode - is negative electrode which attracts positive ions of the electrolyte.
(b) Ions present are: H\(^+\), OH\(^{-}\) and SO\(_4^{-2}\)
Source: Myschool Past Questions Archive (Record #54085)