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Physics
NECO SSCE 2005
Heat Energy & Temperature
Which of the following is a percussion Instrument?
A
Flute
B
Guitar
C
Piano
D
Trumpet
E
Xylophone
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 #43023)
Physics
NECO SSCE 2005
Heat Energy & Temperature
Which of the following statements is correct?
A
Alpha particles have a large mass and high penetrating power
B
Alpha particles have a small mass and a low penetrating power
C
Beta partials have no mass and a high penetrating power
D
Beta particles have a large mass and a low penetrating power
E
Gamma rays have no mass and a high penetrating power
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 #43026)
Physics
NECO SSCE 2005
Heat Energy & Temperature
Radio receivers are tuned using
A
electromagnets
B
electric motors
C
Inductors
D
variable capacitors
E
variable resistors
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 #43034)
Physics
NECO SSCE 2005
Heat Energy & Temperature
The motion of the wheel of a bicycle moving on a smooth straight road is
A
oscillatory and random
B
oscillatory and translational
C
rotational and oscillatory
D
rotational and random
E
rotational and translational
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 #43038)
Physics
NECO SSCE 2005
Heat Energy & Temperature
The most suitable instrument for measuring the diameter of a thin wire is a
A
meter rule
B
micrometer screw gauge
C
pair of dividers
D
pair of engineer’s calipers
E
venire calipers
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 #43067)
Physics
NECO SSCE 2005
Heat Energy & Temperature
The most suitable instrument for measuring the diameter of a thin wire is a
A
meter rule
B
micrometer screw gauge
C
pair of dividers
D
pair of engineer’s calipers
E
venire calipers
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
WAEC / WASSCE 2005
Heat Energy & Temperature
Solution
(a) Explain cations (b) Draw and label an electrolytic cell.
medium Difficulty
Verified Correct Answer: Option
Physical Principles & Numerical Solution
(a) Cations are positive ions that are attracted to the cathode during relectrolysis e.g. cu\(^{2+}\), Ag\(^+\) , H\(^+\), Na\(^+\) etc.
(b)
Source: Myschool Past Questions Archive (Record #53824)
Physics
WAEC / WASSCE 2005
Heat Energy & Temperature
Solution
(a) Define surface tension
(b) State two methods by which the surface tension of a liquid can be reduced
medium Difficulty
Verified Correct Answer: Option
Physical Principles & Numerical Solution
(a) Surface tension is the property of a liquid which makes its surface behave as though covered by an elastic skin.
(b) The surface tension of a liquid can be reduced by (i) Heating the liquid (ii) Addition of impurities such as oil, alcohol, soap, camphor, kerosene etc.
Source: Myschool Past Questions Archive (Record #53828)
Physics
UTME / JAMB 2004
Heat Energy & Temperature
Solution
Which of the following is an electrolyte?
A
Paraffin
B
Sugar solution
C
Grape fruit
D
Alcohol
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
It has been scientifically proven that 100g of grapefruit contains 135g of potassium electrolyte.
Source: Myschool Past Questions Archive (Record #12799)
Physics
UTME / JAMB 2004
Heat Energy & Temperature
Solution
Given three capacitors 0.3μF, 0.5μF and 0.2μF, the joint capacitance when arranged to give minimum capacitance is
A
0.1μF
B
0.3μF
C
1.0μF
D
0.5μF
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
1/C = 1/0.3 + 1/0.5 + 1/0.2 = 10.3333
=> C = 1 / 10.3333 = 0.09677
≅ 0.1μF
∴ C = 0.1μF
Source: Myschool Past Questions Archive (Record #12804)
Physics
UTME / JAMB 2004
Heat Energy & Temperature
Solution
If the angle between two vectors P and Q is Oº, the vectors are said to
A
intersect at the angle 45o
B
intersect at the angle 60o
C
be parallel
D
be perpendicular
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
If the angle between two vectors P and Q is 0^\circ, they point in the same direction and are parallel (in the same sense).
Source: Myschool Past Questions Archive (Record #12889)
Physics
UTME / JAMB 2004
Heat Energy & Temperature
Diagram
Solution
The refractive index of the medium M in the diagram above is
Attached Figure / Diagram
A
1/√3
B
2√3
C
√3
D
2/√3
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
From the above diagram ; ? = 90o - 30o = 60o
v = 90 - 60 = 30
∴ refractive index = (sin ?)/(sin v) = (sin 60o / sin 30o) = √3/2/1/2
= √3/2 x 1/2
= √3
Source: Myschool Past Questions Archive (Record #12926)
Physics
UTME / JAMB 2004
Heat Energy & Temperature
Solution
If a force of 50N stretches a wire from 20m to 20.01m, what is the amount of force required to stretch the same material from 20m to 20.05m?
A
250N
B
200N
C
100N
D
50N
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
Original length = 20m
first new length = 20.01m
first increase in length = 20.01m - 20m = 0.01m
Second new length = 20.05m
second increase in length = 20.05 - 20m = 0.05m
From hooke's law = \( \frac{F_1}{e_1} = \frac{F_2}{e_2}\)
\(\implies \frac{50}{0.01} = \frac{F_2}{0.05}\)
\(\implies F_2 = \frac{50 \times 0.05}{0.01} = 250N \)
Source: Official Exam / Past Question Archive
Physics
WAEC / WASSCE 2004
Heat Energy & Temperature
The molecular structure of a liquid is such that
A
the molecules have unlimited freedom of movement
B
molecular movement is restricted to vibration only
C
intermolecular collisions take place
D
all molecules moves move with the same speed
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 #34266)
Physics
WAEC / WASSCE 2004
Heat Energy & Temperature
Which of the following statements about the mass and the weight of a body is not correct? its
A
mass is a scalar quantity
B
weight is a function of the gravitational pull on it
C
mass on earth and on the moon is the same
D
weigh at the equatior and at the poles is the same
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 #34267)