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Physics
WAEC / WASSCE 2016
Heat Energy & Temperature
A pressurized perfume bottle is left on the window pane of a room. What happens to he gas molecules of the perfume on a sunny day? They
A
expand
B
collide less often
C
move more rapidly
D
contract
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 #45626)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
Given that v, f and \(\lambda\) are the velocity, frequency and wavelength of a wave respectively. Which of the following equations is correct?
A
v = f2\(\lambda\)
B
f = \(\frac{v}{\lambda}\)
C
f = \(\frac{v}{\lambda^2}\)
D
\(\lambda = \frac{f}{v^2}\)
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 #45638)
Physics
WAEC / WASSCE 2016
Waves and Optics
Solution
The distance between two successive trough of a wave is 0.4m. If the frequency of the source is 825Hz, Calculate the speed of the wave
A
165.0 ms-1
B
330.0ms-1
C
41.5ms-1
D
85.0ms-1
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
v = f\(\lambda\)
= 825 x 0.4
= 330.0ms-1
Source: Myschool Past Questions Archive (Record #45639)
Physics
WAEC / WASSCE 2016
Waves and Optics
Diagram
X-rays and infrared rays are both electromagnetic. Which common property do the waves have? Both waves
Attached Figure / Diagram
A
are longitudinal
B
have same frequency
C
have the same wavelength
D
travel at the same speed in a vacuum
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 #45640)
Physics
WAEC / WASSCE 2016
Waves and Optics
The image formed by a concave mirror is real, inverted and magnified, when object is placed
A
at the focus
B
at the centre of curvature
C
beyond the centre of curvature
D
between the centre of curvature and the focus
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 #45641)
Physics
WAEC / WASSCE 2016
Waves and Optics
Total internal reflection. i. is a phenomenon of refraction of light. ii. occurs when light rays travel into a denser medium. iii. occurs when the critical angle is just exceeded. iv. is a phenomenon of reflection of light. Which of the statements above are correct?
A
i and ii only
B
i and iii only
C
i, ii and iii only
D
i, iii and iv only
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 #45642)
Physics
WAEC / WASSCE 2016
Heat Energy & Temperature
Complementary colours are those which
A
have the same refractive index
B
have the same wavelength
C
add-up to produce black light
D
add-up to produce white light
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 #45643)
Physics
WAEC / WASSCE 2016
Waves and Optics
Diagram
Solution
The diagram given illustrates the waveform of a note produced by vibrations in an air column of length L. If the speed of sound in air is V, derive an expression for the frequency of the notes
Attached Figure / Diagram
A
\(\frac{V}{L}\)
B
\(\frac{5VL}{2}\)
C
\(\frac{5L}{4V}\)
D
\(\frac{5V}{4L}\)
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
L = \(\frac{5\lambda}{4}\)
\(\lambda = \frac{4L}{5}\)
But \(\lambda = f\lambda\)
f = \(\frac{v}{\lambda} = \frac{v}{\frac{4L}{5}}\)
= \(\frac{5v}{4L}\)
Source: Myschool Past Questions Archive (Record #45644)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
The pair of musical instruments that works on the vibration of air in pipes is
A
piano and the organ
B
guitar and the flute
C
trumpet and the violin
D
flute and the trumpet
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 #45645)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
Solution
An astronomical telescope has objectives and eye-piece lenses of focal length 3.5m and 5cm respectively. Determine the magnifying power of the telescope when in normal adjustment
A
70.0
B
17.5
C
7.0
D
0.7
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
Magnify power = \(\frac{f_o}{f_e}\)
= \(\frac{3.5 \times 100}{5.0}\)
= 70
Source: Myschool Past Questions Archive (Record #45646)
Physics
WAEC / WASSCE 2016
Electricity and Magnetism
Solution
An aluminium cable of diameter 4 x 10-3m and resistivity 3.0 x 10-8\(\omega\)m has a resistance of 21\(\Omega\). Calculate the length of the cable. (\(\pi = 3.14\))
A
8.0 x 102m
B
8.8 x 103m
C
8.0 x 104m
D
8.8 x 104m
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
R = \(\frac{4eL}{\pid^2}\)
L = \(\frac{R\pid^2}{4e}\)
= \(\frac{21 \times 3.14(4 \times 10^{-3})^2}{4 \times 3.0 x 10^{-8}}\)
= 8.8 x 103m
Source: Myschool Past Questions Archive (Record #45652)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
The electricity meters in houses measure energy unit consumed in
A
kilowatt-hour
B
volt
C
ampere
D
coulomb
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 #45659)
Physics
WAEC / WASSCE 2016
Mechanics and Properties of Matter
Solution
A man and his friend have masses 70kg and 60kg respectively. If they are seated 1.0m apart, calculate the gravitational force of attraction between them. (G = 6.67 x 10-11 Nm2 kg-2)
A
1.59 x 10-14 N
B
2.80 x 10-7 N
C
1.30 x 10-2 N
D
6.30 x 1013 N
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
F = \(\frac{GM_1M_}{r^2}\)
= \(\6.67 \times 10^{-11} \times 70 \times 60}{1^2}\)
= 2.8014 x 10-7 N
Source: Myschool Past Questions Archive (Record #45662)
Physics
WAEC / WASSCE 2016
Electricity and Magnetism
Solution
The p.d across a parallel-plate capacitor is 103V. If the distance between the two plates is 10cm. Calculate the magnitude of the electric field strength between the plates.
A
1.0 x 104Vm-1
B
1.0 x 105Vm-1
C
1.5 x 105Vm-1
D
2.0 x 105Vm-1
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
E = \(\frac{v}{d} = \frac{10^3}{0.1}\)
= 10000
= 1.0 x 104Vm-1
Source: Myschool Past Questions Archive (Record #45667)
Physics
WAEC / WASSCE 2016
Electricity and Magnetism
Two different materials, rubbed against each other acquired opposite charges when separated. This is an example of charging by
A
induction
B
friction
C
conduction
D
convection
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 #45669)