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Physics WAEC / WASSCE 2006 Units, Measurements & Dimensional Analysis
The S.I units of frequency, period and amplitude of a wave are respectively
A
hertz, second and centimeter
B
second, metre and hertz
C
metre, hertz and seconds
D
hertz, second and metre
medium Difficulty
Physics WAEC / WASSCE 2006 Waves, Sound & Vibrations
a note of frequency 2000Hz has a velocity of 400 ms-1. calculate the wavelength of the note
A
5.0m
B
2.0m
C
0.5m
D
0.2m
medium Difficulty
Physics WAEC / WASSCE 2006 Current Electricity & Electric Circuits
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
Physics WAEC / WASSCE 2006 Waves, Sound & Vibrations
Which of the following observations cannot be explained using the rectilinear propagation of light?
A
production of images by a pinhole camera
B
production of real images of objects by lenses
C
formation of an annular eclipse
D
diffraction patterns of light
medium Difficulty
Physics WAEC / WASSCE 2006 Waves, Sound & Vibrations
The distance between the successive crests of a wave travelling at 20ms\(^{-1}\) is 25cm. Calculate the frequency of the wave
A
0.8Hz
B
5.0Hz
C
50.0Hz
D
80.0hz
medium Difficulty
Physics WAEC / WASSCE 2006 Reflection, Refraction & Dispersion of Light
A ray from a fixed object is incident on a plane mirror at an angle of 20o. If the mirror is rotated through 30o by how many degree would the reflected ray rotate?
A
60o
B
50o
C
40o
D
30o
medium Difficulty
Physics WAEC / WASSCE 2006 Current Electricity & Electric Circuits
Which of the following distances is usually adjustable in the camera? The distance between the
A
lens and the film
B
diaphragm and the shutter
C
shutter and the film
D
diaphragm and the film
medium Difficulty
Physics WAEC / WASSCE 2006 Reflection, Refraction & Dispersion of Light
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
Physics WAEC / WASSCE 2006 Current Electricity & Electric Circuits
In which of the following media would sound wave travel fastest?
A
wood
B
water
C
iron
D
mercury
medium Difficulty
Physics WAEC / WASSCE 2006 Current Electricity & Electric Circuits
Which of the following actions is necessary in order to tune a string to produce a note of an octave higher than its fundamental?
A
doucling the length of the string
B
reducing the tension by half
C
reducing the mass per unit length
D
increasing the tension four times
medium Difficulty
Physics WAEC / WASSCE 2006 Current Electricity & Electric Circuits
The acceleration due o gravity may be defined as the force
A
of attraction of the sun and on the earth
B
with which the earth revolves around the sun
C
with which the earth attracts one kilo-gram mass
D
of the moon on the earth
medium Difficulty
Physics WAEC / WASSCE 2006 Electrostatics & Capacitors
An electron of mass m and charge \(\Box\) enters a uniform electric field between two metal plates P and q separated by a distance d. P is maintained at a potential V while Q is earthed. Determine an expression for the magnitude of the acceleration of electron through the field
A
\(\frac{eV}{md}\)
B
\(\frac{d}{meV}\)
C
\(\frac{md}{eV}\)
D
\(\frac{e}{Vmd}\)
medium Difficulty
Physics WAEC / WASSCE 2006 Electrostatics & Capacitors
Which of the following factors does not affect the capacitance of a parallel plate capacitor?
A
area of the plates
B
nature of the surface of the plates
C
distance of separation between the plates
D
nature of the insulating material between the plates
medium Difficulty
Physics WAEC / WASSCE 2006 Electrostatics & Capacitors
The equivalent capacitance of a 3\(\mu F\) capacitor and a 6\(\mu F\) capacitor connected in parallel is
A
2.0\(\mu F\)
B
3.0\(\mu F\)
C
4.5\(\mu F\)
D
9.0\(\mu F\)
medium Difficulty
Physics WAEC / WASSCE 2006 Current Electricity & Electric Circuits
a cell of e.m.f. 1.5V and internal resistance 1.0\(\Omega\) is connected to two resistor of resistance 2.0\(\Omega\) and 3.0\(\Omega\) in series. Calculate the current through the resistors
A
0.25A
B
0.30A
C
0.35A
D
0.50A
medium Difficulty
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