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Physics
UTME / JAMB 2013
Thermal Physics
Solution
Two liquids X and Y having the same mass are supplied with the same quantity of heat. If the temperature rise in X is twice that of Y, the ratio of specific heat capacity of X to that of Y is
A
2:1
B
1:2
C
4:1
D
1:4
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
MC\(x_\theta\) = MC\(y_\theta\)
\(x_\theta\) = 2 \(\times y_\theta\)
MC(2\(y_\theta\)) = MC\(y_\theta\)
⇒ 2C = C
=1 : 2
Source: Myschool Past Questions Archive (Record #27325)
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
Waves and Optics
A wave that travels through stretched strings is known as
A
electromagnetic wave
B
micro wave
C
mechanical wave
D
seismic wave
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 #27350)
Physics
UTME / JAMB 2013
Waves and Optics
A transverse wave and a longitudinal wave travelling in the same direction in a medium differ essentially in their
A
frequency
B
amplitude
C
direction of vibration of the particles of the medium
D
period of vibration of the particles of the medium
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 #27351)
Physics
UTME / JAMB 2013
Mechanics and Properties of Matter
Solution
What is the velocity of sound at 100 oC if the velocity of sound at 0 oC is 340ms -1?
A
497m-1
B
440m-1
C
397m-1
D
240m-1
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
\(V \propto \sqrt{T}\)
⇒ \(\frac{V_{1}}{\sqrt{T_{1}}} = \frac{V_{2}}{\sqrt{T_{2}}}\)
Using the above formula, we get
\(V_{2} \approxeq 397ms^{-1}\)
Source: Myschool Past Questions Archive (Record #27352)
Physics
UTME / JAMB 2013
Waves and Optics
Solution
If a sonometer has a fundamental frequency of 450HZ, what is the frequency of the fifth overtone?
A
2700Hz
B
456Hz
C
444Hz
D
75Hz
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
5th Overtone = 6fo = 6 x 450 = 2700Hz
Source: Myschool Past Questions Archive (Record #27353)
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
Waves and Optics
Solution
If the linear magnification of the objective and eyepiece convex lenses of a compound microscope are 4 and 7 respectively. Calculate the angular magnification of the microscope
A
2
B
3
C
11
D
28
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
M = M1 x M2 = 4 x 7 = 28
Source: Myschool Past Questions Archive (Record #27357)
Physics
UTME / JAMB 2013
Waves and Optics
Solution
The angle of deviation of light of various colours passing through a triangular prism increases in the order
A
red → green → blue
B
green → violet → blue
C
blue → red → green
D
blue → green → red
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
In a triangular prism, light of different colors is refracted at different angles, with red light deviating the least and blue light deviating the most.
Source: Myschool Past Questions Archive (Record #27358)
Physics
UTME / JAMB 2013
Mechanics and Properties of Matter
Solution
Calculate the force acting on an electron of charge 1.5 x 10-19C placed in an electric field of intensity 105Vm-1
A
1.5x10-11N
B
1.5x10-12N
C
1.5x10-13N
D
1.5x10-14N
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
F = qE
F = 1.5 x 10-19 x 105
F = 1.5 x 10-14N
Source: Myschool Past Questions Archive (Record #27359)
Physics
UTME / JAMB 2013
Electricity and Magnetism
Capacitors are used in the induction coil to
A
control circuits
B
prevent distortion of electric fields
C
prevent electric sparks
D
dissipate energy
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 #27360)
Physics
UTME / JAMB 2013
Electricity and Magnetism
Solution
A cell of emf 1.5V is connected in series with a 1Ω resistor and a current of 0.3A flows through the resistor. Find the internal resistance of the cell
A
4.0Ω
B
3.0Ω
C
1.5Ω
D
1.0Ω
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
r = \(\frac{E}{I} - R\)
r = \(\frac{1.5}{0.3} - 1\)
r = 4\(\Omega\)
Source: Myschool Past Questions Archive (Record #27361)