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Physics NECO SSCE 2001 Thermal Physics
Which statement about the concept of temperature is NOT true?
A
Temperature decides the direction of heat flow between two bodies
B
Temperature is a measure of coldness of a body
C
Temperature is a vector quantity
D
Temperature is a measure of hotness of a body.
E
Temperature scales include Fahrenheit, Celsius and Kelvin
medium Difficulty
Physics NECO SSCE 2001 Waves and Optics
Which is a stringed Instrument?
A
drum
B
flute
C
piano
D
saxophone
E
trumpet
medium Difficulty
Physics NECO SSCE 2001 Heat Energy & Temperature
The statement that the mechanical advantage of a machine is 3 means that the
A
efficiency is 33\(\frac{1}{3}\)%
B
effort is three times as large as the load
C
mechanical advantage is 3 times as large as the velocity ratio
D
ratio of the effort to the load is 1: 3
E
Velocity ratio is 3
medium Difficulty
Physics NECO SSCE 2001 Waves and Optics
The wavelength of a stationary wave is 24.0cm. What is the distance between a node and the next antinodes?
A
6.0cm
B
12.0cm
C
18.0cm
D
24.0cm
E
48.0cm
medium Difficulty
Physics NECO SSCE 2001 Thermal Physics
How much heat is required to convert 5.0g of ice at 0 ^\circ C to water at the boiling point? (Specific latent heat of ice = 336Jg-1 specific heat capacity of water = 4.2Jg-1K-1)
A
420 J
B
1680 J
C
1701 J
D
2100 J
E
3780 J
medium Difficulty
Physics NECO SSCE 2001 Heat Energy & Temperature
What gives rise to the line spectra observed in atoms?
A
change of an electron from a higher to a lower energy level in the atom
B
disturbed protons in the nucleus
C
excitation of an electron in the atom
D
kinetic energy of a moving atom
E
potential energy of an electron inside an atom
medium Difficulty
Physics NECO SSCE 2001 Heat Energy & Temperature
A lead-acid accumulator is used in preference to a dry battery in a car because
A
a dry battery cannot supply the necessary high voltage
B
a dry battery would not operate on a cold frosty morning
C
the accumulator can give a bigger current and can be recharged
D
the accumulator can supply a.c
E
the chemicals used in a dry battery constitute a fire hazard.
medium Difficulty
Physics NECO SSCE 2001 Mechanics and Properties of Matter
A metal has a work function of 3.0 eV. What is the threshold frequency of the metal when electrons are just liberated from the metal.(1 eV = 1.6 \times 10-19J; h = 6.6 \times 10-34Js)
A
4.8 × 10-19Hz
B
9.3 × 10-7Hz
C
4.8 × 1014Hz
D
7.3 × 1014Hz
E
9.3 × 1014Hz
medium Difficulty
Physics NECO SSCE 2001 Mechanics and Properties of Matter
A body whose initial velocity is u is uniformly accelerated to a final velocity v in t seconds. If the distance travelled is s, and the acceleration is a, which equation is INCORRECT for the motion of the body?
A
s = ut+\(\frac{1}{2}\)at2
B
v2 = u2 + 2as
C
v =u + at
D
v = u + 2as
E
s = \(\frac{1}{2}\)(u+v)t
medium Difficulty
Physics NECO SSCE 2001 Electricity and Magnetism
A cell can supply currents of 0.60 A and 0.30 A through a 2.0 ω and a 5.0 ω resistor respectively. What is the internal resistance of the cell?
A
0.2 ω
B
0.4 ω
C
1.0 ω
D
3.0 ω
E
9.0 ω
medium Difficulty
Physics NECO SSCE 2001 Mechanics and Properties of Matter
Which statement is a correct consequence of the uncertainly principle?
A
A particle’s kinetic energy cannot be measured accurately at any time
B
Both momemtum and energy of a particle can be known with absolute certainly
C
It is possible to measure exactly both the position and momentum of a particle at the same time
D
The complete knowledge of the position of a particle implies the complete ignorance of its energy
E
The uncertainty in our knowledge of energy and the duration taken to measure it, are each less than Planck’s constant.
medium Difficulty
Physics NECO SSCE 2001 Mechanics and Properties of Matter
Which statements(s) is/are NOT true? I. A saturated vapour is one that is in equilibrium with its liquid in a closed space. II. A vapour contains molecules with varying kinetic energy and their distances apart are smaller than those of the molecules of a liquid III. Relative Humidity = \(\frac{\text{Saturated vapour pressure at dew point}} {\text{Saturated vapour pressure at air temperature}}\) x 100% IV. The saturated vapour pressure of water increases with temperature
A
I only
B
II only
C
II and III only
D
III and IV only
E
II, III and IV only
medium Difficulty
Physics NECO SSCE 2001 Electricity and Magnetism
A 220 V, 60 Hz alternating current supply is connected to an inductor of 3.5H. What is the current passing through the inductor?
A
0.0167 A
B
0.1670 A
C
1.6700 A
D
16.7000 A
E
167.0000 A
medium Difficulty
Physics NECO SSCE 2001 Waves and Optics
The speed of sound travelling in various media increases in the order:
A
air, iron bar, water
B
air, water, iron bar
C
iron, bar water, air
D
water, air, iron bar
E
water, iron bar, air
medium Difficulty
Physics NECO SSCE 2001 Thermal Physics
The lower and upper fixed points of a mercury-in-glass thermometer are marked X and 180 mm respectively. On a particular day the mercury meniscus in the thermometer rises to 60mm. If the corresponding reading on a Celsius scale is 20 ° C, what is the value X?
A
6.0mm
B
18.0mm
C
30.0mm
D
60.0mm
E
120.0mm
medium Difficulty
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