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Physics
UTME / JAMB 2016
Heat Energy & Temperature
What happens to a water pool on a day when the humidity of the air is very low?
A
Temperature decreases
B
Slow evaporation
C
Temperature increases
D
Rapid evaporation
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 #44662)
Physics
UTME / JAMB 2016
Heat Energy & Temperature
If the distance between the object and the pinhole of a pinhole camera is reduced by half the size of the image of the object
A
Is quadrupled
B
Is halved
C
Remains the same
D
Is double
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 #44665)
Physics
UTME / JAMB 2016
Heat Energy & Temperature
Which of the following statements is correct about a machine?
A
Efficiency of a machine is always greater than I
B
Efficiency decreases with an increase in friction
C
Velocity ratio depends on friction
D
Mechanical advantage increases with an increase in friction
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 #44667)
Physics
UTME / JAMB 2016
Heat Energy & Temperature
The instrument used to view stars is the
A
Prism binoculars
B
Telescope
C
Film projector
D
Microscope
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 #44668)
Physics
UTME / JAMB 2016
Heat Energy & Temperature
A wire of length 10m is cooled from 50oC to 10oC. Calculate the decrease in the length of the wire. [c = 3 x 10-5K-1]
A
1.8 x 10-4m
B
1.5 x 10-4m
C
1.2 x 10-2m
D
1.8 x 10-3m
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 #44681)
Physics
UTME / JAMB 2016
Heat Energy & Temperature
Solution
When an athlete perspires after running, he loses heat through
A
Evaporation
B
Conduction
C
Radiation
D
Convection
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
When sweat evaporates from the surface of the skin, it absorbs heat from the body, effectively cooling the athlete down. Thus, evaporation is the primary way an athlete loses heat through perspiration.
Source: Myschool Past Questions Archive (Record #44682)
Physics
UTME / JAMB 2016
Heat Energy & Temperature
Semiconductor is a class of solid whose conductivity increases with an increase in
A
Pressure
B
Temperature
C
Current
D
Voltage
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 #44688)
Physics
UTME / JAMB 2016
Heat Energy & Temperature
Which of the following statements is NOT correct?
A
Brownian motion is an evidence of the particle nature of matter
B
Atoms combine to form molecules
C
The molecules of matter are not in constant motion
D
matter is made up of molecules
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 #44690)
Physics
UTME / JAMB 2016
Heat Energy & Temperature
A dynamo primarily converts
A
Mechanical energy into electrical energy
B
Electrical energy into kinetic energy
C
Potential energy into kinetic energy
D
Kinetic energy into potential energy
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 #44692)
Physics
UTME / JAMB 2016
Heat Energy & Temperature
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
Heat Energy & Temperature
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
Heat Energy & Temperature
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
Heat Energy & Temperature
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
Heat Energy & Temperature
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
Heat Energy & Temperature
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)