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Physics
UTME / JAMB 2006
Heat Energy & Temperature
Solution
The electrolyte in the Nickei-iron (Nife) accumulator is
A
potassium hydroxide solution
B
dilute tetraoxosulphate(VI)acid
C
copper tetraoxosulphate(VI)solution
D
ammonium chloride solution
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
In a nickel-iron (NiFe) accumulator, the electrolyte used is typically a potassium hydroxide solution.
Source: Myschool Past Questions Archive (Record #13861)
Physics
UTME / JAMB 2006
Heat Energy & Temperature
Solution
The component of vector X along the direction of vector Y is zero when
A
X and Y are in opposite directions to each other
B
X is at an angle of 45° to Y
C
X is perpendicular to Y
D
X and Y are parallel to each other
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
When two vectors are perpendicular, the angle between them is 90 degrees, resulting in the component of one vector along the direction of the other being zero.
Source: Myschool Past Questions Archive (Record #13883)
Physics
UTME / JAMB 2006
Heat Energy & Temperature
Solution
A certain manufacturer wishes to make an n-type semiconductor. Which materials would he select for doping?
A
boron and antimony
B
boron and sodium
C
aluminium and indium
D
arsenic and antimony
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
An n- type semi conductor is usually formed by dopping the semi conductor(a four valent element)with a five valent
element.(arsenic and antimony)
Source: Myschool Past Questions Archive (Record #13895)
Physics
UTME / JAMB 2006
Heat Energy & Temperature
Diagram
Solution
The diagram above represents the stress-strain graph for a typical metal rod. What does the X represent?
Attached Figure / Diagram
A
Breaking point
B
Yield point
C
Elastic limit
D
Proportional limit
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
In the stress - strain graph shown above, X represents the breaking point of the wire
Source: Myschool Past Questions Archive (Record #14282)
Physics
UTME / JAMB 2006
Heat Energy & Temperature
Solution
The motion of smoke particles from a chimney is typical of?
A
random motion
B
circular motion
C
rotational motion
D
oscillatory motion
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
Smoke particles move chaotically and unpredictablely due to their collisions with air molecules, which characterizes random motion.
Source: Myschool Past Questions Archive (Record #13880)
Physics
UTME / JAMB 2006
Heat Energy & Temperature
Solution
A shooter wants to fire a bullet in such a way that its horizontal range is equal to three times its maximum height. At the what angle should he fire the bullet to achieve this?
A
68o
B
53o
C
30o
D
45o
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
Horizontal range = 3 x maxi. height
=> (U2Sin2θ) / g = (3 x U2sin2θ) / 2g
∴sin2θ = 3sin2θ2
=> 2sinθcosθ = 3sin2θ2
∴ 4sinθcosθ = 3sin2θ
=> 4cosθ = 3sinθ
∴ sinθ/cosθ = 4/3; => tanθ = 4/3 = 1.3333
θ = tan-1 (1.3333)
= 53o
Source: Myschool Past Questions Archive (Record #14332)
Physics
WAEC / WASSCE 2006
Heat Energy & Temperature
Which of the following phenomena causes capillary of liquids in tubes of narrow bore?
A
viscosity
B
surface tension
C
osmosis
D
brownian motion
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 #34615)
Physics
WAEC / WASSCE 2006
Heat Energy & Temperature
A solid body will float in a liquid if its
A
density is less than that of a liquid
B
mass is equal to that of the liquid
C
density is greater than that of the liquid
D
mass is less than that of the liquid
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 #34627)
Physics
WAEC / WASSCE 2006
Heat Energy & Temperature
An object is said to undergo oscillatory motion when it moves
A
in an erratic manner
B
to and fro about a fixed point
C
in a circular path
D
along a continuous path from the starting point
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 #34629)
Physics
WAEC / WASSCE 2006
Heat Energy & Temperature
Uniform speed occurs when there is equal change of
A
distance in equal times
B
displacement in equal times
C
velocity in equal times
D
acceleration in equal times
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 #34640)
Physics
WAEC / WASSCE 2006
Heat Energy & Temperature
Solution
A car accelerates uniformly from rest at 5 ms-2. Determine its speed after 10s
A
50.0ms-1
B
25.0ms-1
C
2.0ms-1
D
0.5ms-1
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
V = u + at = 0 + 5 x 10 = 50m/s2
Source: Myschool Past Questions Archive (Record #34643)
Physics
WAEC / WASSCE 2006
Heat Energy & Temperature
Which of the following quantities is a vector?
A
speed
B
distance
C
energy
D
momentum
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 #34645)
Physics
WAEC / WASSCE 2006
Heat Energy & Temperature
The silvered surface in a vacuum flask reduces heat loos due to
A
conduction
B
convection
C
radiation
D
evaporation
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 #34661)
Physics
WAEC / WASSCE 2006
Heat Energy & Temperature
The eclipse of the moon occurs when the
A
moon comes exactly between the earth and the sun
B
earth comes exactly between the moon and the sun
C
sun comes exactly between the earth and the moon
D
moon reflects all the rays from the sun onto the earth
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 #34668)
Physics
WAEC / WASSCE 2006
Heat Energy & Temperature
Solution
A travelling microscope is focused on a mark on a table. If a glass block of thickness 18.0cm is placed on the mark by how many centimeters will the microscope be moved upwards so as to focus the mark once again? [refractive index of glass = 1.5]
A
27cm
B
24cm
C
9cm
D
6cm
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
Apparent depth = \(\frac{\text{thickness}}{\text{refractive index}}\)
= \(\frac{18}{1.5} = 12cm\)
Upward adjustment = 18 - 12
= 6cm
Source: Myschool Past Questions Archive (Record #34679)