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Physics NECO SSCE 2003 Linear Motion, Projectiles & Kinematics
A stone is released from a height of 80m above the ground. Calculate its velocity just before it strikes the ground. (g = 10ms\(^{-2}\))
A
25ms-1
B
40 ms-1
C
55 ms-1
D
65ms-1
E
80 ms-1
medium Difficulty
Physics NECO SSCE 2003 Magnetism, Electromagnetism & AC Circuits
The S.l unit of magnetic flux density is
A
farad
B
henry
C
kgm-3
D
tesla
E
weber
medium Difficulty
Physics NECO SSCE 2003 Current Electricity & Electric Circuits
A narrow, uniform glass tube, closed at one end, constains air which is sealed by a thread of mercury. The tube is placed first horizontally and then vertically with the open end at the top. Which of the following statements is correct?
A
The length of the entrapped air in the horizontal position is less than that in the vertical position
B
The length of the entrapped air in the vertical position is less than that in the horizontal position
C
The length of the mercury column becomes shorter in the horizontal position than in the vertical position
D
The length of the mercury column becomes shorter in the vertical position than in the horizontal position
E
The pressure of the entrapped air is atmospheric in both cases.
medium Difficulty
Physics NECO SSCE 2003 Equilibrium of Forces, Moments & Flotation
Which of the following motions will be produced by a pair of equal, opposite and non-collinear parallel forces acting on a body?
A
Oscillatory
B
Random
C
Rotational
D
Translational
E
Vibratory
medium Difficulty
Physics NECO SSCE 2003 Lenses & Optical Instruments
The inability of the eye to focus near objects is known as
A
astigmatism
B
eye ring
C
hypermatropia
D
myopia
E
presbyopia
medium Difficulty
Physics NECO SSCE 2003 Temperature, Thermometry & Thermal Expansion
A platinum-resistance thermometer has a resistance of 4Ω at 0°C and 12Ω at 100°C. Assuming that the resistance changes uniformly with temperature. Calculate the resistance of the thermometer when the temperature is 45°C.
A
6.0Ω
B
6.42Ω
C
7.6Ω
D
8.4Ω
E
16.0Ω
medium Difficulty
Physics NECO SSCE 2003 Current Electricity & Electric Circuits
A short chain is usually attached to the rear side of petro tanker trailing behind it to ensure that the
A
charges generated by friction in the tanker are conducted to the earth
B
chain vibrates in resonance with the tanker’s engine
C
heat generated by friction in the engine is conducted to the earth
D
petrol tanker is balanced on the road
E
tanker does not exceed a certain speed limit
medium Difficulty
Physics NECO SSCE 2003 Magnetism, Electromagnetism & AC Circuits
A transformer is required to give 120V from a 240V mains supply. If the primary has 5500 turns, how many turns has the secondary?
A
232
B
450
C
550
D
2750
E
11000
medium Difficulty
Physics NECO SSCE 2003 Current Electricity & Electric Circuits
The distance between two successive crests of a water wave is 0.5m. If a particle on the surface of the water wave makes two complete vertical oscillations in 1s, calculate the speed of the wave.
A
0.25ms-1
B
0.50ms-1
C
1.00ms-1
D
2.00ms-1
E
4.00ms-1
medium Difficulty
Physics NECO SSCE 2003 Atomic, Quantum, Nuclear Physics & Electronics
In 90 seconds, the mass of a radioactive element reduces to \(\frac{1}{16}\) of its original value. Determine the half- life of the element.
A
15.0s
B
18.0s
C
22.5s
D
30.0s
E
45.0s
medium Difficulty
Physics NECO SSCE 2003 Work, Energy, Power & Simple Machines
Which of the following statements about the concept of solid friction is NOT true?
A
It always acts in the direction of motion
B
It causes wear and tear in car tyres
C
It depends on the nature of the surfaces in contact
D
It is independent of the area of the surfaces in contact.
E
It reduces the efficiency of the machine
medium Difficulty
Physics NECO SSCE 2003 Magnetism, Electromagnetism & AC Circuits
The space surrounding a magnet in which the magnetic force is exerted is
A
magnetic field
B
magnetic flux
C
magnetic point
D
magnetic pole
E
magnetic strength
medium Difficulty
Physics NECO SSCE 2003 Atomic, Quantum, Nuclear Physics & Electronics
Which of the following scientists postulated that moving particles exhibit wave properties?
A
Ernest Rutherford
B
Erwin Schroedinger
C
Frank Hertz
D
Louis de Broglie
E
Werner Heisenberg.
medium Difficulty
Physics NECO SSCE 2003 Linear Motion, Projectiles & Kinematics
The area under the curve of a velocity time graph represents
A
acceleration
B
distance covered
C
instantaneous speed
D
time taken
E
work done
medium Difficulty
Physics NECO SSCE 2003 Circular Motion, Gravitation & Simple Harmonic Motion
A body is launched from the earth’s surface, of radius R, so that it just escapes from the gravitational influence of the earth; If the gravitational constant is G and the mass of the earth is M, what is the escape velocity of the boby.
A
\(\sqrt{2GM}\) ÷ R
B
\(\frac{\sqrt{2GM}}{R}\)
C
\(\frac{\sqrt{2G}}{MR}\)
D
\(\sqrt{2GMR}\)
E
\(\frac{\sqrt{R}}{2GM}\)
medium Difficulty
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