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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
Modern Physics and Nuclear Physics
When \(^{210}_{82}Pb\) decays to \(^{206}_{80}Pb\), it emits
A
two alpha and two beta particles
B
an alpha particle
C
one beta particle
D
one alpha and one beta particle
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 #26993)
Physics
UTME / JAMB 2014
Mechanics and Properties of Matter
What type of reaction is represented by the equation \(^{2}_{1}X+^{2}_{1}X\rightarrow^{3}_{2}Y+^{1}_{0}n+Energy\)
A
Ionization
B
Fusion
C
Fission
D
Chain
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 #26994)
Physics
UTME / JAMB 2014
Modern Physics and Nuclear Physics
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: Myschool Past Questions Archive (Record #26995)
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
Mechanics and Properties of Matter
An object of mass m moves with a uniform speed v round a circular path of radius r. If its angular speed is \(\omega\), the magnitude of the centripetal force acting on it is
A
\(m \omega^2 r\)
B
\(\frac{mv^2}{r}\)
C
\(m \omega r\)
D
\(\frac{mv^2}{r^2}\)
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 #35738)
Physics
WAEC / WASSCE 2014
Mechanics and Properties of Matter
When an elastic material is stretched by a force, the energy stored in it is
A
kinetic
B
potential
C
thermal
D
electrical
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 #35739)
Physics
WAEC / WASSCE 2014
Mechanics and Properties of Matter
When the linear momentum of a body is constant, the net force acting on it
A
is zero
B
increases
C
decreases
D
remains constant
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 #35740)
Physics
WAEC / WASSCE 2014
Mechanics and Properties of Matter
If no net force acts on an object, the object maintains a state of rest or constant speed in a straight line. The above is a statement of Newton's
A
first law of motion
B
second law of motion
C
third law of motion
D
law of universal gravitation
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 #35741)
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)
Physics
WAEC / WASSCE 2014
Heat Energy & Temperature
The knowledge of surface tension is applied in the following areas except in
A
manufacturing of rain coats
B
production of palm oil
C
floating of a needle on water
D
washing of plates with soapy water
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 #35743)
Physics
WAEC / WASSCE 2014
Heat Energy & Temperature
Solution
A body is projected vertically upwards with a speed of 10 ms-1 from a point 2m above the ground. Calculate the total time taken for the body to reach the ground. [g = 10ms-2]
A
1.00s
B
2.00s
C
2.18s
D
3.00s
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
T = \(\frac{2u}{g} = \frac{2 \times 10}{10} = 2s\)
Source: Myschool Past Questions Archive (Record #35744)
Physics
WAEC / WASSCE 2014
Mechanics and Properties of Matter
Solution
A car starts from rest and covers a distance of 40m in 10s. Calculate the magnitude of its acceleration
A
0.25ms-2
B
0.80ms-2
C
3.20ms-2
D
4.00ms-2
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
S = ut + \(\frac{1}{2} at^2\)
40 = 0 x 10 + \(\frac{1}{2}\) x a x 102
50a = 40
a = \(\frac{40}{50}\)
= 0.8ms-2
Source: Myschool Past Questions Archive (Record #35745)
Physics
WAEC / WASSCE 2014
Mechanics and Properties of Matter
A screw-jack has the distance between its successive threads as P and the length of its tommy bar as r. Its velocity ratio is given by the expression
A
\(\frac{2 \pi r^2}{P}\)
B
\(\frac{2 \pi r}{P}\)
C
\(\frac{2 \pi}{rp}\)
D
\(\frac{P}{2 \pi r}\)
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 #35751)