Question Library
Browse, filter, and study verified past examination questions with step-by-step mathematical reasoning.
Searching 18,000+ Questions...
Sifting topics, KaTeX formulas & verified solutions
Showing 1051–1065 of 5315 verified questions
Sort by:
Physics
UTME / JAMB 2018
Heat Energy & Temperature
The pitch of an acoustic device can be increased by
A
decreasing the loudness
B
increasing the intensity
C
increasing the frequency
D
decreasing the intensity
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 #47397)
Physics
UTME / JAMB 2018
Heat Energy & Temperature
One of the features of the fission process is that
A
it leads to chain reaction
B
its products are not radioactive
C
neutrons are not released
D
the of the masses of the reactants equals the sum of the masses of the products
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 #47398)
Physics
UTME / JAMB 2018
Modern Physics and Nuclear Physics
Solution
The linear expansivity of brass is 2 x 10\(^{-5}\) C\(^{-1}\). If the volume of a piece of brass is 15.00cm at 0^\circC, what is the volume at 100^\circC
A
16.03cm\(^3\)
B
15.09cm\(^3\)
C
16.00cm\(^3\)
D
15.03cm\(^3\)
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
Volume Expansivity \(\gamma\) = \(3\alpha\)
\(\gamma = 3 \times 2\times10^{-5}\)
\(\gamma = 6\times10^{-5}C^{-1}\)
\(V_{2} = V_{1}(1 + \gamma\theta)\)
\(V_{2} = 15( 1 + (6\times10^{-5}\times(100-0)))\)
\(V_{2} = 15(1.006)\)
= \(15.09cm^{3}\)
Source: Myschool Past Questions Archive (Record #47399)
Physics
UTME / JAMB 2018
Mechanics and Properties of Matter
Solution
A lead bullet of mass 0.05 kg is fired with a velocity of 200 m/s into a lead block of mass 0.95 kg. Given that the lead block can move freely, the final kinetic energy after impact is
A
100J
B
150J
C
50J
D
200J
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
From the law of conservation of linear momentum,
\(m_1 u_1 + m_2 u_2 = m_1 v_1 + m_2 v_2\)
Since the collision is inelastic, we have
\((0.05 \times 200) - (0.95 \times 0) = (0.05 + 0.95)V\)
\(10 = V\)
\(V = 10ms^{-1}\)
Hence the Kinetic energy = \(\frac{1}{2} (0.05 + 0.95) \times 10^2\)
= \(\frac{1}{2} \times 100\)
= 50J
Source: Myschool Past Questions Archive (Record #47400)
Physics
UTME / JAMB 2018
Electricity and Magnetism
Which of the following obeys Ohm's law?
A
all metals
B
diode only
C
all electrolytes
D
glass
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 #47391)
Physics
UTME / JAMB 2018
Heat Energy & Temperature
Which of the following statements are TRUE of isotopes?
I. Isotopes of an element have the same chemical properties because they have the same number of electrons
II. Isotopes of elements are normally separated using physical properties
III. Isotopes of an element have the same number of protons in their nuclei
A
I and II only
B
I and III only
C
II and III only
D
I, II and III
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 #47392)
Physics
UTME / JAMB 2018
Heat Energy & Temperature
Diagram
In the diagram given the hanging mass m2 is adjusted until m1 is on the verge of sliding. The coefficient of static
Attached Figure / Diagram
A
\(\frac{m_1}{m_2}\)
B
\(\frac{m_1g}{m_2}\)
C
\(\frac{m_2}{m_1}\)
D
\(\frac{m_2g}{m_1}\)
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 #47393)
Physics
UTME / JAMB 2018
Waves and Optics
Which of the following may be used to explain a mirage?
I. Layers of air near the road surface have varying refractive indices in hot weather
II. Road surfaces sometimes becomes invisible in hot weather
III. Light from the sky can be refracted upwards after coming close to the road surface.
A
I and III only
B
II and III only
C
II only
D
I, II and III
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 #47394)
Physics
UTME / JAMB 2018
Mechanics and Properties of Matter
Diagram
In the diagram given if the atmospheric pressure is 760mm, the pressure in the chamber G Is
Attached Figure / Diagram
A
660mm
B
830mm
C
690mm
D
860mm
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 #47395)
Physics
UTME / JAMB 2018
Modern Physics and Nuclear Physics
If the fraction of the atoms of a radioactive material left after 120years is \(\frac{1}{64}\), what is the half-life of the material? \(\frac{1}{64}\)
A
20 years
B
10 years
C
2 years
D
24 years
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 #47402)
Physics
UTME / JAMB 2018
Heat Energy & Temperature
Diagram
In the diagram shown, which of the simple pendulum will resonate with P when set into oscillation?
Attached Figure / Diagram
A
U
B
T
C
R and T
D
Q and R
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 #47403)
Physics
UTME / JAMB 2018
Heat Energy & Temperature
The time rate of loss of heat by a body is proportional to the
A
temperature of its surroundings
B
temperature of the body
C
difference in temperature between the body and its surroundings
D
ratio of the temperature of the body to that of its surroundings
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 #47404)
Physics
UTME / JAMB 2018
Electricity and Magnetism
Solution
A positively charged rod X is brought near an uncharged metal sphere Y and is then touched by a finger with X still in place. When the finger is removed, the result is that Y has
A
no charge and a zero potential
B
a positive charge and a zero potential
C
a negative charge and a positive potential
D
a negative charge and a negative potential
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
When a positively charged rod X is brought near an uncharged metal sphere Y, it induces a separation of charges. The side of the sphere near the rod becomes negatively charged as electrons are attracted to it, while the far side becomes positively charged.
When the finger touches the sphere, electrons can flow from the finger into the sphere, giving it an excess of electrons. After removing the finger and the rod, the sphere retains a negative charge.
Source: Myschool Past Questions Archive (Record #47405)
Physics
UTME / JAMB 2018
Electricity and Magnetism
Solution
Electrical appliances in homes are normally earthed so that
A
a person touching the appliances is safe from electric shock
B
both the a.c. and d.c. sources can be used
C
the appliances are maintained at a higher pd than the earth
D
the appliances are maintained at a lower pd than the earth
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
Earthing keeps the metal body of an appliance at earth potential (0 V). If a live wire touches the casing, current flows to the ground, preventing electric shock.
Source: Myschool Past Questions Archive (Record #47406)
Physics
UTME / JAMB 2018
Heat Energy & Temperature
The process whereby a liquid turns spontaneously into vapour is called
A
regelation
B
evaporation
C
boiling
D
sublimation
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 #47407)