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 14191–14205 of 14893 verified questions
Sort by:
Physics
UTME / JAMB 1980
Electrostatics & Capacitors
Which of the following physical quantities is NOT a vector?
A
velocity
B
work
C
force
D
electric field intensity
E
magnetic induction
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 #29077)
Physics
UTME / JAMB 1980
Current Electricity & Electric Circuits
Solution
The motion of the moving skin of a talking drum can rightly be described as
A
translational
B
random
C
rotational
D
oscillatory
E
transitory
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
The skin of the drum vibrates back and forth when struck, creating sound waves, which is characteristic of oscillatory motion.
Source: Myschool Past Questions Archive (Record #29079)
Physics
UTME / JAMB 1980
Elasticity, Density, Pressure & Fluids
which of the following does NOT cause a reduction of the surface tension of water?
A
soap solution
B
detergent
C
alcohol
D
camphor
E
grease
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 #29084)
Physics
UTME / JAMB 1980
Work, Energy, Power & Simple Machines
Solution
The water at the bottom of a waterfall is slightly warmer than that at the top because part of the
A
potential energy raises the water temperature
B
water absorbs latent heat from the atmosphere
C
kinetic energy is changed intyo internal energy
D
dropping mass of water increases the heat capacity
E
A and C above
medium Difficulty
Verified Correct Answer: Option E
Physical Principles & Numerical Solution
The water at the bottom of a waterfall is warmer than at the top because the conversion of potential energy to kinetic energy during the fall increases the water's internal energy and temperature.
Source: Myschool Past Questions Archive (Record #29085)
Physics
UTME / JAMB 1980
Calorimetry, Latent Heat & Change of State
Solution
a pressure cooker saves both time and fuel in cooking because inside the cooker, the
A
boiling point of water is raised
B
pressure is constant
C
heat is completely trapped
D
temperature is evenly distributed
E
volume of steam varies
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
When atmospheric pressure increases, the boiling point becomes higher, and when atmospheric pressure decreases (as it does when elevation increases), the boiling point becomes lower.
Source: Myschool Past Questions Archive (Record #29086)
Physics
UTME / JAMB 1980
Reflection, Refraction & Dispersion of Light
Solution
Which of the following statements is NOT true of the image in a plane mirror? The image is
A
the same size as the object
B
laterally inverted
C
virtual
D
magnified
E
the same distance behind the mirror as the object is in front
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
the following are properties of the image formed by a plane mirror are;
The image is always upright.
The image is of the same size as the object.
The distance of the image from the mirror is exactly equal to the distance of the object from the mirror.
The image cannot be formed on the screen, i.e., it is a virtual image.
The image is laterally inverted.
Source: Myschool Past Questions Archive (Record #29087)
Physics
UTME / JAMB 1980
Waves, Sound & Vibrations
Solution
Any line or section through an advancing wave in which all the particles are in the same phase is called the
A
wave lenght
B
wave crest
C
wave trough
D
wave amplitude
E
wave front
medium Difficulty
Verified Correct Answer: Option E
Physical Principles & Numerical Solution
the wavefront of a time-varying field is the set of all points where the wave has the same phase of the sinusoid.
Source: Myschool Past Questions Archive (Record #29088)
Physics
UTME / JAMB 1980
Electrostatics & Capacitors
Solution
What is the relative permitivity of a capacitor if its capacitance with a medium as dielectric is 16 farads and its capacitance with vacuum as dielectric is 2 farads?
A
o
B
\(\frac{1}{2}\)
C
2
D
8
E
32
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
E = Er x E0
16 = Er x 2
Er = 8
Source: Myschool Past Questions Archive (Record #29091)
Physics
UTME / JAMB 1980
Lenses & Optical Instruments
Solution
If the magnification of a virtual image formed of an object 10cm from a convex lens is 3, then the focal length of the lens is
A
10cm
B
15cm
C
16cm
D
19cm
E
20cm
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
V = 3u, U = 10cm
therefore U = -ve,
F = \(\frac{UV}{U + V}\)
= \(\frac{10 \times (-30)}{10 - 30 }\)
= 15cm
Source: Myschool Past Questions Archive (Record #29094)
Physics
UTME / JAMB 1980
Current Electricity & Electric Circuits
Solution
A quantity of sungas at -133 occupies 1/3m3 under pressure 1.4 x 105 Nm-2. if the gas occupies 31 m-2 at 37oC, its pressure will be
A
1.26 x 103Nm-2
B
3.3 x104Nm-2
C
1.35 x 104Nm-2
D
2.2 x 104Nm-2
E
105Nm-2
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
\(\frac{P_1V_1}{T_1}\) = \(\frac{P_2V_2}{T_2}\)
= \(\frac{\frac{1}{3} \times 1.4 \times 10^5}{-133 + 273}\) = \(\frac{P_2\times31}{37 +273}\)
P2 = 3.3 x 10
Source: Myschool Past Questions Archive (Record #29095)
Physics
UTME / JAMB 1980
Current Electricity & Electric Circuits
Solution
A stand-by generator is connected to fifteen 40 W lamps and musician's 600 W amplifying system. How much energy is used if the generator runs for 6 hours?
A
3.84k Wh
B
7.20k Wh
C
8.40k Wh
D
12.00k Wh
E
14.56k Wh
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
Total power = (15 x 40) + 600
= 1200 watts
Energy(kWh) = \(\frac{1200}{1000}\) x 6
= 7.2 kwH
Source: Myschool Past Questions Archive (Record #29098)
Physics
UTME / JAMB 1980
Current Electricity & Electric Circuits
Solution
A milliameter of resistance 5\(\Omega\) and full scale deflection of 50m A is to used to measure a potential difference of 50 V. The resistance of the multiplier should be
A
95\(\Omega\)
B
110\(\Omega\)
C
595\(\Omega\)
D
995\(\Omega\)
E
1005\(\Omega\)
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
V = IR
50 = 50 x 10\(^{-3}\) (5 + R)
R = 995\(\Omega\)
Source: Myschool Past Questions Archive (Record #29104)
Physics
UTME / JAMB 1980
Equilibrium of Forces, Moments & Flotation
Solution
An object of mass m and volume v, is totally immersed in a liquid of density p. The tension of a string holding it is
A
mg
B
(m + pv)g
C
(m - pv)g
D
pvg
E
[M/m-pv]g
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
Tension = upthrust on object
= weight in air - weight i liga
= mg - pvg
= (m - pv)g
Source: Myschool Past Questions Archive (Record #29106)
Physics
UTME / JAMB 1980
Equilibrium of Forces, Moments & Flotation
Solution
The relative densities of zinc, brass, copper, gold and silver are respectively 7.1, 8.5, 8.9, 19.3, 10.5. A metal ornament which weighs 0.425kg and can displace 50 x 10-6m3m of water is made of
A
zinc
B
brass
C
copper
D
gold
E
silver
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
R.D = \(\frac{\text {density of object}}{\text{density of water}}\)
= \(\frac{\frac{0.425}{50 10^-6}{1000}\)
= 8.5
Source: Myschool Past Questions Archive (Record #29109)
Physics
UTME / JAMB 1980
Current Electricity & Electric Circuits
Heat is supplied to a block of ice 0o until half of it has melted. Which of the following statements is true?
A
the temperature rises and the ice exoands
B
the temperature remains constant and the volume of ice decreases
C
the ice gives out heat as it melts
D
the mass remains constant and the temperature increases
E
the mass decreases because some heat is lost to the atmosphere
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 #29112)