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Physics
UTME / JAMB 2014
Heat Energy & Temperature
What is the least possible error encountered when taking measurement with a meter rule?
A
0.1mm
B
1.0mm
C
0.5mm
D
0.2mm
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 #26954)
Physics
UTME / JAMB 2014
Heat Energy & Temperature
Solution
A quantity which requires magnitude and direction to be specified is
A
Temperature
B
Distance
C
Displacement
D
Mass
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
Displacement is a vector quantity
Source: Myschool Past Questions Archive (Record #26955)
Physics
UTME / JAMB 2014
Heat Energy & Temperature
Solution
Which type of motion do the wheels of a moving car undergo?
A
Vibratory and translational motion
B
Random and translational motion
C
Rotational mand oscillatory motion
D
Translational and rotational motion
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
The tyre in motion makes a rotation and it translates in a straight line alongside. if the wheels is turned it continued further in a translational straight line through rotational motion.
Source: Myschool Past Questions Archive (Record #26957)
Physics
UTME / JAMB 2014
Heat Energy & Temperature
Solution
A wheel and an axle is used to raise a load whose weight is 800N when an effort of 250N is applied. If the radii of the wheel and axle are 800mm and 200mm respectively, the efficiency of the machine is
A
90%
B
80%
C
85%
D
87%
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
VR = 800/200 = 4
\(Efficiency = \frac{MA}{VR} \times \frac{100}{1}\)
\(Efficiency = \frac{L}{E} \times \frac{1}{VR} \times \frac{100}{1}\)
\(Efficiency = \frac{800}{250} \times \frac{1}{4} \times \frac{100}{1}\)
= 78.74%
= 80%
Source: Myschool Past Questions Archive (Record #26966)
Physics
UTME / JAMB 2014
Heat Energy & Temperature
The small droplets of water that form on the grass in the early hours of the morning is
A
Fog
B
Haul
C
Mist
D
Dew
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 #26968)
Physics
UTME / JAMB 2014
Heat Energy & Temperature
Solution
What is the equivalent of 20K in Celsius scale?
A
-253oC
B
-293oC
C
68oC
D
36oC
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
= (20 - 273)^\circC
= -253^\circC
Source: Myschool Past Questions Archive (Record #26969)
Physics
UTME / JAMB 2014
Heat Energy & Temperature
The melting point of a substance is equivalent to its
A
Vapour Pressure
B
Solidification Temperature
C
Liquidification Temperature
D
Solidification Pressures
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 #26972)
Physics
UTME / JAMB 2014
Heat Energy & Temperature
Solution
Heat transfer by convection in a liquid is due to the
A
Latent heat of vaporization of the liquid
B
Increased vibration of the molecules of the liquid about theit mean position
C
Variation of density of the liquid
D
Expansion of the liquid as it is heated
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
Liquids and gases expand when they are heated. The liquid or gas in hot areas is less dense than the liquid or gas in cold areas, so it rises into the cold areas.
Source: Myschool Past Questions Archive (Record #26974)
Physics
UTME / JAMB 2014
Heat Energy & Temperature
Solution
An object is placed 10m from a pinhole camera of length 25cm. Calculate the linear magnification.
A
2.5x102
B
2.5x10-2
C
2.5x10-1
D
2.5x101
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
\(\text{Linear Magnification} = \frac{\text{Length of Camera}}{\text{Distance of the Object}}\)
\(\text{Linear Magnification} = \frac{25}{1000}\)
\(\text{Linear Magnification} = 2.5 \times 10^{-2}\)
Source: Myschool Past Questions Archive (Record #26977)
Physics
UTME / JAMB 2014
Heat Energy & Temperature
When a telescope is in normal use, the final image is at
A
Infinity
B
The focus
C
The radius of curvature
D
The near point
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 #26980)
Physics
UTME / JAMB 2014
Heat Energy & Temperature
The magnitude of the angle of dip at the equator is
A
360o
B
0o
C
90o
D
180o
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 #26988)
Physics
UTME / JAMB 2014
Heat Energy & Temperature
Which of the following is NOT a Fundamental S.I unit?
A
Metre
B
Ampere
C
Newton
D
Second
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 #26992)
Physics
UTME / JAMB 2014
Heat Energy & Temperature
Solution
A glass bottle of initial volume 2 x 10\(^4\) cm\(^3\) is heated from 20ºC to 50ºC. If the linear expansivity of glass is 9 x 10\(^{-6}\)K\(^{-1}\), the volume of the bottle at 50ºC is
A
20016.2cm3
B
20005.4cm3
C
20008.1cm3
D
20013.5cm3
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
\(\gamma = \frac{V_2 - V_1}{V(\theta)}\)
\(3(9 \times 10^4) = \frac{V_2 - 2 \times 10^4}{2 \times 10^4(30)}\)
V\(_2\) - 2 x 10\(^4\) = 2 x 10\(^4\) (30) x 3 (9 x 10\(^{-6}\))
V\(_2\) = 2 x 10\(^4\) (30) x 3 (9 x 10\(^{-6}\)) + 2 x 10\(^4\)
V\(_2\) = 16.2 + 2 x 10\(^4\)
V\(_2\) = 20016.2cm3
Source: Official Exam / Past Question Archive
Physics
WAEC / WASSCE 2014
Heat Energy & Temperature
A ball falling through a viscous liquid is acted upon by
A
upthrust only
B
upthrust and the ball's weight
C
the ball's weight and viscous force
D
upthrust, the ball's weight and viscous force
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 #35737)
Physics
WAEC / WASSCE 2014
Heat Energy & Temperature
Which of the following pairs of physical quantities is made up of vectors?
A
speed and displacement
B
mass and force
C
dislacement and acceleration
D
momentum and length
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 #35742)