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Physics
NECO SSCE 2009
Heat Energy & Temperature
The term torque means
A
the equilibrant of two concurrent forces
B
the moment of a force about an ads
C
the resultant of several forces acting on a body in equilibrium
D
two coplanar forces at right angle to each other
E
two equal and opposite forces whose lines of action do not coincide
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 #43058)
Physics
NECO SSCE 2009
Heat Energy & Temperature
Which of the following statements is correct about volatile liquids? They have
A
low boiling point
B
Low evaporating rate
C
high conductivity
D
high density
E
high viscosity
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 #43065)
Physics
NECO SSCE 2009
Heat Energy & Temperature
A body accelerating will have a constant speed if it is
A
falling from a height
B
in equilibrium
C
moving in a circular path
D
moving in a straight line
E
oscillating
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 #43073)
Physics
NECO SSCE 2009
Heat Energy & Temperature
Which of the following statements about a gas is NOT correct?
A
It has no definite shape
B
It is compressible
C
Its molecules are closely packed
D
Its molecules gain kinetic energy when heated
E
Its molecules move about randomly
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 #43075)
Physics
NECO SSCE 2009
Heat Energy & Temperature
A body executing simple harmonic motion has an angular speed of 2π radians. Its period of oscillation is (π 3.14).
A
0.05s
B
1.00s
C
2.00s
D
3.14s
E
6.28s
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 #43076)
Physics
NECO SSCE 2009
Heat Energy & Temperature
The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth?
A
1.92N
B
2.88N
C
6.72N
D
8.00N
E
12.00N
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 #43087)
Physics
NECO SSCE 2009
Heat Energy & Temperature
Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane?
A
Random and rotational
B
Rotational and oscillatory
C
Rotational only
D
Translations only
E
Translational and rotational
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 #43089)
Physics
NECO SSCE 2009
Heat Energy & Temperature
A series RLC circuit is said to resonate, when
A
capacitive reactance is zero
B
conductance is maximum
C
current is minimum
D
impedance is minimum
E
inductive reactance is zero
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 #43090)
Physics
NECO SSCE 2009
Heat Energy & Temperature
A series RLC circuit is said to resonate, when
A
capacitive reactance is zero
B
conductance is maximum
C
current is minimum
D
impedance is minimum
E
inductive reactance is zero
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: Official Exam / Past Question Archive
Physics
WAEC / WASSCE 2009
Heat Energy & Temperature
Solution
A particle is dropped from a vertical height h and falls freely for a time t. With the aid of a sketch, explain how h varies with
(a) t;
(b) t\(^2\).
medium Difficulty
Verified Correct Answer: Option
Physical Principles & Numerical Solution
a) Diagram
- Correct shape in relation to h and t
- h varies parabolically with t
- correct shape in relation to h and t\(^{2 }\)
- h varies linearly with t\(^2\)
Source: Myschool Past Questions Archive (Record #53483)
Physics
WAEC / WASSCE 2009
Heat Energy & Temperature
Solution
A particle is projected horizontally at 15ms\(^{-1}\) from a height of 20m.
Calculate the horizontal distance covered by the particle just before hitting the ground.
[g = 10 ms\(^{-2}\)]
medium Difficulty
Verified Correct Answer: Option
Physical Principles & Numerical Solution
The expected answer is:
Let R represent the horizontal distance covered at time, t.
h = ½ gt\(^2\)
20 = ½ x 10 x t\(^2\)
t = 2 s
R = ut
= 15 x 2
= 30m
Source: Myschool Past Questions Archive (Record #53484)
Physics
WAEC / WASSCE 2009
Heat Energy & Temperature
Solution
(a) Explain what is meant by 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 electrolysis)
(b) Diagram
Correct diagram/sketch: labeling cathode, anode and electrolyte.
Source: Myschool Past Questions Archive (Record #53488)
Physics
UTME / JAMB 2008
Heat Energy & Temperature
Solution
In a good thermos flask, heat loss is reduced through the following features EXCEPT?
A
the lens surface
B
the insulating cork
C
silvered walls
D
the cork lid
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
The silver coating on the inner bottle of a thermos flask is used to prevent heat transfer by radiation
Source: WAEC / JAMB / NECO Classroom Archive (Record #14044)
Physics
UTME / JAMB 2008
Heat Energy & Temperature
Solution
Which of the following is NOT a vector quantity?
A
altitude
B
acceleration
C
displacement
D
weight
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
Altitude is just a measure of height, regardless of direction.
Source: Myschool Past Questions Archive (Record #14016)
Physics
UTME / JAMB 2008
Heat Energy & Temperature
Solution
Find the effective resistance in the diagram above
A
6 Ω
B
12 Ω
C
18 Ω
D
24 Ω
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
The resistors are in series
∴ Reff = R1 + R2 + .....
= 4 + 4 + 4 + 4 + 4 + 4 = 24 Ω
Source: Official Exam / Past Question Archive