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Physics NECO SSCE 2002 Atomic, Quantum, Nuclear Physics & Electronics
Which radiation is emitted when a beam of fast moving cathode rays is stopped by a heavy element?
A
Alpha rays
B
Gamma rays
C
Positive rays
D
Ultraviolet rays
E
X-rays
medium Difficulty
Physics NECO SSCE 2002 Linear Motion, Projectiles & Kinematics
An object is projected with a velocity of 50ms-1 from ground level at an angle \theta to the vertical. If the total time of flight of the projectile is 5s, what is the value of \theta? (g = 10ms-2)
A
0°
B
30°
C
45°
D
60°
E
90°
medium Difficulty
Physics NECO SSCE 2002 Current Electricity & Electric Circuits
What is stored by a dry Leclanhé cell?
A
chemical energy
B
heat energy
C
mechanical energy
D
nuclear energy
E
solar energy
medium Difficulty
Physics NECO SSCE 2002 Magnetism, Electromagnetism & AC Circuits
Lenz’s law of electromagnetic induction states that
A
e.m.f. is induced in a circuit whenever there is a change in the magnetic flux linked with the circuit
B
the induced e.m.f. in a circuit is proportional to the rate of change f the number of lines of force linking the circuit
C
the induced current in a conductor is in such a direction as to oppose the change producing it
D
a force is exerted in a current-carrying conductor in a magnetic field.
E
the induced e.m.f. is proportional to the current producing the magnetic flux.
medium Difficulty
Physics NECO SSCE 2002 Waves, Sound & Vibrations
Which process will increase the rate of oscillation of a pendulum?
A
decreasing the amplitude of oscillation of the pendulum
B
decreasing the length of the pendulum
C
decreasing the mass of the pendulum
D
increasing the length of the pendulum
E
increasing the mass of the pendulum.
medium Difficulty
Physics NECO SSCE 2002 Elasticity, Density, Pressure & Fluids
An object weighing 0.60N is hung on a spiral spring and caused it to extend by 6.0cm. The object is removed and a black of wood replacing it causes the spring to extend by 10.0cm. What is the weight of the block of wood?
A
0.10N
B
0.36N
C
0.80N
D
1.00N
E
3.60N
medium Difficulty
Physics NECO SSCE 2002 Current Electricity & Electric Circuits
A body is uniformly accelerated from rest. Which of the following quantities vary/varies linearly with the square of the time? I. Displacement II. Velocity III. Momentum
A
I only
B
II only
C
III only
D
I and II only
E
II and Ill only
medium Difficulty
Physics NECO SSCE 2002 Temperature, Thermometry & Thermal Expansion
A short response time is obtained in a liquid-in-glass thermometer when the
A
bulb is large and thick-walled
B
bulb is small and thick-walled
C
stem is long and thin
D
liquid is of high density and the bulb is large
E
bulb is thin-walled and the liquid is a good conductor of heat.
medium Difficulty
Physics NECO SSCE 2002 Newton's Laws, Momentum & Collisions
A body of mass M1 moving with a velocity U collides with a stationary body of mass M2 and both move with a common velocity V. If linear momentum is conserved, which expression correctly represents V?
A
M1 + M2 ÷ M1U
B
M2U ÷ M1 – M2
C
M1U ÷ M1 – M2
D
M1U ÷ M1+ M2
E
M2U ÷ M1 + M2
medium Difficulty
Physics NECO SSCE 2002 Work, Energy, Power & Simple Machines
According to the Kinetic Theory, what does NOT occur when the temperature of a constant volume of gas is increased?
A
a decrease in the mean speed kinetic energy of the molecules
B
an increase in the mean speed of the molecules
C
an increase in the momentum change at each collision.
D
an increase in the number of collisions per second
E
an increase in the pressure exerted by the gas.
medium Difficulty
Physics NECO SSCE 2002 Waves, Sound & Vibrations
The wavelength of a stationary wave is 36.0cm. What is the distance between a node and the next anti-node?
A
6.0cm
B
9.0cm
C
18.0cm
D
360cm
E
72.0cm
medium Difficulty
Physics NECO SSCE 2002 Current Electricity & Electric Circuits
An a.c. generator can be converted into a d.c. generator by replacing
A
the slip rings with split-ring commutators
B
the slip rings with armatures
C
the split-rings with slip rings
D
the split-rings with brushes
E
the brushes with slip-ring commutators.
medium Difficulty
Physics NECO SSCE 2002 Atomic, Quantum, Nuclear Physics & Electronics
It is NOT possible to determine exactly and simultaneously the position and momentum of a particle. This statement is known as the
A
Crompton effect
B
de Broglie’s laws
C
Frank-Hertz experimental law
D
Heisenberg’s uncertainly principle
E
wave-particle paradox
medium Difficulty
Physics NECO SSCE 2002 Elasticity, Density, Pressure & Fluids
An air bubble of volume 4cm\(^3\) is formed 20m under water. What will be its volume when it rises to just below the surface of the water if the atmospheric pressure is equivalent to a height of 10m of water?
A
2cm3
B
4cm3
C
6cm3
D
8cm3
E
12cm3
medium Difficulty
Physics NECO SSCE 2002 Temperature, Thermometry & Thermal Expansion
A platinum-resistance thermometer has a resistance of 10 \omega at 0^\circC and 18 \omega at 100^\circC. Assuming that resistance changes uniformly with temperature, what is the resistance of the thermometer when the temperature is 45^\circC?
A
27.8
B
17.8
C
13.6
D
6.4
E
3.6
medium Difficulty
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