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Physics
UTME / JAMB 2013
Heat Energy & Temperature
Solution
A simple pendulum of length 0.4m has a period of 2s. What is the period a similar pendulum of length 0.8m at the same place?
A
8s
B
4s
C
2\(\sqrt{2}s\)
D
\(\sqrt{2}s\)
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
T2 = \(\sqrt{\frac{L^2 \times T_1^2}{L_1}}\)
= \(\sqrt{\frac{0.8 \times 2^2}{0.4}}\)
= 2\(\sqrt{2}s\)
Source: Myschool Past Questions Archive (Record #27122)
Physics
UTME / JAMB 2013
Heat Energy & Temperature
Steam from boiling water causes more damage on the skin than does boiling water because
A
water has a high specific heat
B
steam has latent heat of fusion
C
the steam is at a highter temperature than the water
D
steam brings heat more easily by convection
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 #27346)
Physics
UTME / JAMB 2013
Heat Energy & Temperature
What will happen to the boiling point of pure water when it is heated in a place 30m below sea level?
A
It will be more than 100 oC
B
It will be last than 100 oC
C
It will still be at 100 oC
D
It will be fluctuating
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 #27347)
Physics
UTME / JAMB 2013
Heat Energy & Temperature
The rise or fall of a liquid in a narrow tube is because of the
A
viscosity of the liquid
B
surface tension of the liquid
C
friction between the walls of the tube and the liquid
D
osmotic pressure of the liquid
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 #27348)
Physics
UTME / JAMB 2013
Heat Energy & Temperature
The mechanism of heat transfer from one point to another through the vibration of the molecules of the medium is
A
covection
B
conduction
C
radiation
D
diffusion
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 #27349)
Physics
UTME / JAMB 2013
Heat Energy & Temperature
Solution
A man 1.5m tall is standing 3m in front of a pinhole camera whose distance between the hole and the screen is 0.1m. What is the height of the image of the man on the screen?
A
0.05m
B
0.15m
C
0.30m
D
1.00m
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
\(h_i = \frac{h_o \times V}{u}\)
\(h_i = \frac{1.5 \times 0.1}{3}\)
= 0.05m
Source: Myschool Past Questions Archive (Record #27354)
Physics
UTME / JAMB 2013
Heat Energy & Temperature
Solution
A house has ten 40W and five 100W bulbs. How much will it cost the owner of the house to keep them lit for 10 hours if the cost of a unit is 5N?
A
N90
B
N50
C
N45
D
N5
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
P = 40 x 10 + 100 x 5
P = 400 + 500 = 900W
Cost = \(\frac{900 \times 10 \times 5}{1000}\)
Cost = N45
Source: Myschool Past Questions Archive (Record #27363)
Physics
UTME / JAMB 2013
Heat Energy & Temperature
Induced emfs are best explained using
A
Ohm's law
B
Faraday's law
C
Colomb's law
D
Lenz's law
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 #27367)
Physics
UTME / JAMB 2013
Heat Energy & Temperature
The bond between silicon and germanium is
A
dative
B
covalent bond
C
trivalent
D
ionic
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 #27373)
Physics
UTME / JAMB 2013
Heat Energy & Temperature
The bond between silicon and germanium is
A
dative
B
covalent bond
C
trivalent
D
ionic
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: Official Exam / Past Question Archive
Physics
WAEC / WASSCE 2013
Heat Energy & Temperature
The maximum displacement on either side of the equilibrium position of an object in simple harmonic motion represents
A
period
B
amplitude
C
wavelength
D
frequency
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 #35661)
Physics
WAEC / WASSCE 2013
Heat Energy & Temperature
The slope of a linear distance-times graph represents
A
acceleration
B
displacement
C
speed
D
velocity
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 #35652)
Physics
WAEC / WASSCE 2013
Heat Energy & Temperature
Highly polished silvery surfaces are
A
poor absorbers and poor emitters of radiation
B
poor absorbers and good emitters of radiation
C
good absorbers and poor emitters of radiation
D
good absorbers and good emitters of radiation
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 #35667)
Physics
WAEC / WASSCE 2013
Heat Energy & Temperature
Solution
The volume of a given mass of gas at 27oC and 800 mmHg is 76cm2. Calculate its volume at s.t.p
A
100.0 cm3
B
72.8 cm3
C
60.0 cm3
D
36.4 cm3
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
\(V_2 = \frac{P_1V_1T_2}{P_2T_1} = \frac{800 \times 76 \times 273}{760 \times 300}\)
= 72.8cm3
Source: Myschool Past Questions Archive (Record #35668)
Physics
WAEC / WASSCE 2013
Heat Energy & Temperature
Solution
The refractive index of a material is 1.5. Calculate the critical angle at the glass-air interface
A
19o
B
21o
C
39o
D
42o
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
Sin C = \(\frac{1}{\eta} = \frac{1}{1.5} = 0.6667\)
C = sin\(^{-1}\) 0.6667
= 42^\circ
Source: Myschool Past Questions Archive (Record #35675)