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Physics
UTME / JAMB 2016
Mechanics and Properties of Matter
Solution
The impulse of a force is deduced from Newton's second law as
A
F = ma
B
F = m( \(\frac{v - u}{t}\))
C
F = mg
D
F = mv - mu
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
Force = mass x acceleration
But acceleration = \(\frac{v - u}{\text{t}}\)
F = m x (\(\frac{v - u}{\text{t}}\))
Ft = mv - mu.
Source: Myschool Past Questions Archive (Record #44733)
Physics
UTME / JAMB 2016
Mechanics and Properties of Matter
Boiling occurs when the vapour pressure of a liquid is
A
At the evaporation point
B
Less than the atmospheric pressure
C
Greater than the atmospheric pressure
D
Equal to the atmospheric pressure
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 #44734)
Physics
UTME / JAMB 2016
Mechanics and Properties of Matter
Diagram
Solution
In the diagram above, which of the following velocity-time graphs shows uniform acceleration of a body from rest?
Attached Figure / Diagram
A
C
B
D
C
B
D
A
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
See the velocity-time graph.
Source: Myschool Past Questions Archive (Record #44737)
Physics
UTME / JAMB 2016
Mechanics and Properties of Matter
Diagram
Solution
In the diagram above, the direction of the force between N and S in the magnetic field is
Attached Figure / Diagram
A
MP
B
SN
C
NS
D
PM
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
Magnetic field lines flow from the north pole to the south pole. The force direction is from the north pole (N) toward the south pole (S).
Source: Myschool Past Questions Archive (Record #44740)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
Solution
The dimensions of momentum are
A
MLT
B
ML-1T-1
C
MLT-1
D
ML-1T
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
Momentum = kgms-1 = MLT-1
Source: Myschool Past Questions Archive (Record #45576)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
A student measures the volume of a liquid using a measuring cylinder. What else needs to be measured by the student in order to determine the density of the liquid?
A
depth of the liquid in the cylinder
B
mass of the cylinder
C
mass of the liquid
D
tempersture of the liquid
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 #45578)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
Solution
A ball is dropped from the top of a tower. Due to air resistance,it reaches terminal velocity. Which of the following statement(s) about its motion is/are correct? i. The acceleration of the ball is zero. ii. The net force on the ball is zero. iii. The velocity of the ball increases.
A
i only
B
i and ii only
C
ii and iii only
D
i, ii and iii
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
Terminal velocity refers to the constant speed that an object reaches as it falls through a liquid or gas.
Since the net force on the object is zero, the object has zero acceleration.
Source: Myschool Past Questions Archive (Record #45580)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
Solution
An object of volume 400cm3 and 2.5gcm-3 is suspended from a spring balance with half its volume immersed in water. Determine the reading on the spring balance. (Density of water = 1gcm-3)
A
1200g
B
1000g
C
800g
D
400g
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
Mass = density x volume
400 x 2.5 = 1000g
Loss in mass = volume x density
= \(\frac{400}{2}\) x 1 = 200g
Reading on spring balance = 1000 - 200g = 800g
Source: Myschool Past Questions Archive (Record #45583)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
When a body is thrown vertically upwards, its velocity at the maximum height is
A
maximium
B
zero
C
double its initial value
D
half its initial value
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 #45598)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
Solution
Which of the following statements correctly defines the boiling point of a liquid? The temperature at which the
A
saturated vapour pressure equals the atmospheric pressure
B
molecules leaves the liquid at a rate equal to the rate at which they return
C
molecules leave the liquid at a rate higher than that at which they return
D
molecules leave the liquid at a rate lower than the rate at which they return
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
The boiling point of a liquid is the temperature at which the vapor pressure of a liquid is equal to the pressure of the atmosphere on the liquid, equal to 212^\circF (100^\circC) for water at sea level.
Source: Myschool Past Questions Archive (Record #45606)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
Diagram
Solution
The diagram given illustrates a force-distance graph for the motion of a wooden block. Determine the work done on the block when moved through a distance of 5m.
Attached Figure / Diagram
A
4J
B
15J
C
5J
D
100J
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
W = FS = 20 X 5
= 100J
Source: Myschool Past Questions Archive (Record #45584)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
Solution
The two person of a body undergoing a uniformly accelerated motion are (10s, 10ms-1) and (30s, 50ms-1). On the velocity-time graph pf the body.
A
0.5ms-2
B
2.0ms-2
C
10.0ms-2
D
40.0ms-2
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
Slope = a = \(\frac{\deltav}{\deltat}\)
= \(\frac{50 - 10}{30 - 10}\)
= 2.0ms-2
Source: Myschool Past Questions Archive (Record #45587)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
Given that v, f and \(\lambda\) are the velocity, frequency and wavelength of a wave respectively. Which of the following equations is correct?
A
v = f2\(\lambda\)
B
f = \(\frac{v}{\lambda}\)
C
f = \(\frac{v}{\lambda^2}\)
D
\(\lambda = \frac{f}{v^2}\)
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 #45638)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
The pair of musical instruments that works on the vibration of air in pipes is
A
piano and the organ
B
guitar and the flute
C
trumpet and the violin
D
flute and the trumpet
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 #45645)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
Solution
An astronomical telescope has objectives and eye-piece lenses of focal length 3.5m and 5cm respectively. Determine the magnifying power of the telescope when in normal adjustment
A
70.0
B
17.5
C
7.0
D
0.7
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
Magnify power = \(\frac{f_o}{f_e}\)
= \(\frac{3.5 \times 100}{5.0}\)
= 70
Source: Myschool Past Questions Archive (Record #45646)