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Physics
UTME / JAMB 2016
Current Electricity & Electric Circuits
Solution
Which of the following does Not use magnetic effect of current to function?
A
Lead acid accumulator
B
An electric bell
C
A moving coil galvanometer
D
A telephone receiver
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
Lead acid accumulator does not use the magnet effect of current. It is an electrochemical cell that produces current as a result of a chemical reaction
Source: Myschool Past Questions Archive (Record #44713)
Physics
UTME / JAMB 2016
Current Electricity & Electric Circuits
Vapour is said to be saturated on top of an enclosed liquid if _________
A
The rate of condensation is greater than that of vapourization
B
The rate of condensation is equal to that of vapourization
C
There is neither condensation nor vaporization of the liquid
D
The rate of condensation is less that that of vaporization
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 #44714)
Physics
UTME / JAMB 2016
Reflection, Refraction & Dispersion of Light
Solution
A pool of water appears to be 1.00m deep when viewed vertically from above. What is the actual depth of the pool?
[Refractive index of water = 1.33]
A
13.300m
B
0.750m
C
1.013m
D
1.330m
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
n = \(\frac{\text {Read depth}}{\text{Apparent depth}}\) = 1.33 = \(\frac{Rd}{1}\)
Rd = 1.33 x 1 = 1.330m
Source: Myschool Past Questions Archive (Record #44715)
Physics
UTME / JAMB 2016
Waves, Sound & Vibrations
Shadows and eclipse result from the
A
Reflection of light
B
Rectilinear propagation of light
C
Diffraction of light
D
Refraction of light
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 #44716)
Physics
UTME / JAMB 2016
Reflection, Refraction & Dispersion of Light
Solution
Which of the following is obtained when a magenta is mixed with green colour?
A
Yellow
B
Blue
C
White
D
Red
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
This refers to additive color mixing (mixing colored lights, as in stage lighting, screens, or physics experiments involving primary colors of light).
Source: Myschool Past Questions Archive (Record #44726)
Physics
UTME / JAMB 2016
Magnetism, Electromagnetism & AC Circuits
Solution
Which of the following instruments can be used to measure current in an a.c circuit?
A
Hot wire ammeter
B
Moving coil ammeter
C
Tangent galvanometer
D
Moving coil galvanometer
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
A hot wire ammeter measures current by detecting the heating effect produced when current passes through a thin wire, with the amount of heat generated being directly proportional to the current flow.
Source: Myschool Past Questions Archive (Record #44727)
Physics
UTME / JAMB 2016
Waves, Sound & Vibrations
Which of the following statements about wave motion is correct?
A
Electromagnetic waves are transverse
B
Transverse waves do not require a medium for propagation
C
Longitudinal waves vibrate perpendicular to the direction of travel
D
All mechanical waves are longitudinal
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 #44728)
Physics
UTME / JAMB 2016
Elasticity, Density, Pressure & Fluids
Solution
A manometer is an instrument used for measuring
A
Relative density of liquid
B
Pressure in liquids and gases
C
Humidity
D
Atmospheric pressure
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
a manometer is used to measure pressure in liquids and gases. Manometer gauges measure the pressure of gases and vapors from atmospheric to about 1 Pa by balancing the force exerted by the gas or vapor against the weight of a column of liquid, usually mercury, water, or oil.
Source: Myschool Past Questions Archive (Record #44730)
Physics
UTME / JAMB 2016
Equilibrium of Forces, Moments & Flotation
Solution
A body which weighs 50N in air displaces 3.7kg of water when partially immersed in water. Calculate the upthrust on the body?
A
8.7N
B
37.0N
C
87.0N
D
13.0N
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
Upthrust = Weight or water displaced
= 3.7 x 10 = 37N
Source: Myschool Past Questions Archive (Record #44732)
Physics
UTME / JAMB 2016
Newton's Laws, Momentum & Collisions
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
Elasticity, Density, Pressure & Fluids
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
Lenses & Optical Instruments
Solution
If the magnification of a virtual image formed by an object 10cm from a convex less is 3, then the focal length of the lens is
A
10cm
B
20cm
C
25cm
D
15cm
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
M = \(\frac{v}{u}\) = 3 = \(\frac{v}{30}\). V = 30m
\(\frac{1}{u}\) + \(\frac{1}{v}\) = \(\frac{1}{f}\) = \(\frac{1}{10}\) - \(\frac{1}{30}\) = \(\frac{1}{f}\)
\(\frac{3 - 1}{30}\) = \(\frac{1}{f}
f = \(\frac{30}{2}\) = 15cm
Source: Myschool Past Questions Archive (Record #44735)
Physics
UTME / JAMB 2016
Linear Motion, Projectiles & Kinematics
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
Current Electricity & Electric Circuits
Diagram
In the diagram above, the neutral point is at
Attached Figure / Diagram
A
R
B
X
C
S
D
P
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 #44738)
Physics
UTME / JAMB 2016
Units, Measurements & Dimensional Analysis
Diagram
Solution
From the diagram above, the measuring accuracy of the micrometer screw gauge is
Attached Figure / Diagram
A
4.78mm
B
4.16mm
C
4.66mm
D
4.70mm
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
Micrometer screw gauge reading = main scale reading + vernier scale reading
= 4.0mm + 16mm = 4.16mm
Source: Myschool Past Questions Archive (Record #44739)