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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
Waves and Optics
Solution
What is the angular magnification of a telescope having objective and eyepiece lenses of a focal lengths 30cm and 3cm respectively?
A
60
B
10
C
30
D
90
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
M = \(\frac{y}{x}\) = \(\frac{30}{3}\)
= 10
Source: Myschool Past Questions Archive (Record #44679)
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
Mechanics and Properties of Matter
Solution
The rate of cooling of a heated quantity of liquid in an enclosure depends on the
A
Pressure of the liquid
B
Temperature in the enclosure
C
Pressure of the enclosure
D
Volume of the liquid
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
The temperature difference between the heated liquid and the surrounding environment (the enclosure) is a crucial factor in determining the rate of heat transfer.
According to Newton's Law of Cooling, the rate of cooling is proportional to the temperature difference between the object and its surroundings.
Source: Myschool Past Questions Archive (Record #44684)
Physics
UTME / JAMB 2016
Thermal Physics
Solution
The heat required to raise a mass of a substance through 1K is known as
A
Specific heat capacity
B
Specific latent heat of vaporization
C
Capacity latent heat of fusion
D
Heat capacity
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
Heat capacity is the amount of heat required to raise the temperature of a given mass or object by 1 K (or 1 ^\circC).
Source: Myschool Past Questions Archive (Record #44685)
Physics
UTME / JAMB 2016
Waves and Optics
A boy in a barber's shop sits between two parallel mirrors. The number of images observed by him will be
A
Infinite
B
Ten
C
Eight
D
Forty
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 #44687)
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
Mechanics and Properties of Matter
A saturated vapour pressure of a liquid increases when the
A
Temperature of a liquid increases
B
Volume of the liquid increases
C
Volume of the liquid decreases
D
Temperature of the liquid decreases
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 #44694)
Physics
UTME / JAMB 2016
Mechanics and Properties of Matter
Solution
What force has to be exerted on a mass 60kg to give it an acceleration of 10ms-2 vertically upwards?
[g = 10ms-2
A
300N
B
600N
C
1200N
D
400N
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
F = Ma + mg = 60 x 10 x 60 x 10 = 1200N
Source: Myschool Past Questions Archive (Record #44696)
Physics
UTME / JAMB 2016
Mechanics and Properties of Matter
Solution
A metre rule is pivoted at its mid-point with a vertical force of 10N hanging from the distance 30cm from the mid-point. At what distance must a 15N force hang to balance the ruler horizontally?
A
30cm
B
10cm
C
20cm
D
25m
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
Clockwise moment = Anti-clockwise moment
10 x 30 = 15 x X
X = 20cm
Source: Myschool Past Questions Archive (Record #44698)
Physics
UTME / JAMB 2016
Mechanics and Properties of Matter
Solution
A projectile is fired from the ground level with a velocity of 300ms-1 at an angle of a 30o to the horizontal.
Calculate the time taken to reach the maximum height?
[g = 10ms-2]
A
30s
B
20s
C
25s
D
15s
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
The total time of flight is given as
\(T = \frac{2usin\theta}{g}\)
Hence, time to maximum height is half of the total time of flight,
t = \(\frac{u sin\theta}{g}\)
= \(\frac{300 \text {sin} 30}{10}\) = 15s
Source: Myschool Past Questions Archive (Record #44702)
Physics
UTME / JAMB 2016
Mechanics and Properties of Matter
Solution
A train with an initial velocity of 20ms-1 is subjected to a uniform deceleration of 2ms-2. The time required to bring the train to a complete halt is
A
40s
B
10s
C
20s
D
5s
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
t = \(\frac{v - u}{a}\) = \(\frac{20 - 0}{2}\)
= 10s
Source: Myschool Past Questions Archive (Record #44706)