EXPECTED PHYSICS PRACTICAL QUESTIONS & SOLUTIONS FOR WAEC 2013
#DIAGRAM#
Connect the circuit at shown in the diagram
above:-
Close the key k. read and record the emitters
reading Io when the clip is not constant
wire. Open the key with clip making
constant with the constant wire when
l=80cm. close the key read and record the
ammeter and I.
Repeat the procedure with l=70,60,50,40
and 30 respectively in each case read and
record ammeter reading I. evaluate I-1 .
Tabulate your readings.
plot a graph of I on the vertical axis against
I-1 on the horizontal axis starting from the
origin (0.0) Determine the slope S of the
graph and its intercept C
Evaluate P=C/S. using your graph determine
the current I when I=55cm.
State two precautions taken to ensure
accurate result
Explain what is mean by potential difference
between two point in an electric circuit.
State two factor on which the resistance of
a wire depend.
The resistivity of a given wire of cross
sectional area 0.7mm���2 is 4.9x10-4
ohm�s
Calculate the resistance of two length of a
wire�
#CIRCUTE DIAGRAM#
LIGHT
I. Trace the outline ABCD of a glass block on
a sheet of paper as shown above.
II. Remove the block mark a position very
close to A draw the normal at the point N.
III. Draw the incident ray such that the angle
of incidence i=20�o
IV. Fix two pins at the point P and Q on the
incidence ray
V. Replace the black and fix two other pins
at R and S such the pins appear to be at P
and Q when viewed through side D.C of the
glass block.
VI. Remove the block and join the points at R
and S producing the line to meet DC at F
VII. Join NF
VIII. Draw the normal EF, at F and produce it
to meet the force AB at G
IX. Extend PG to meet the normal EF at H.
X. Measure and record in the table below NF
and NH
Repeat the experiment i=30�o,40�o, 50�o,
and 60�o in each case, measure NF and read
your readings in the table below.
Plot a graph of NF on the vertical axis and
NH on the horizontal axis. Determine the
slope of the graph.
State two precautions to obtain accurate
result
State Snell�s law of refraction
Connect the circuit at shown in the diagram
above:-
Close the key k. read and record the emitters
reading Io when the clip is not constant
wire. Open the key with clip making
constant with the constant wire when
l=80cm. close the key read and record the
ammeter and I.
Repeat the procedure with l=70,60,50,40
and 30 respectively in each case read and
record ammeter reading I. evaluate I-1 .
Tabulate your readings.
plot a graph of I on the vertical axis against
I-1 on the horizontal axis starting from the
origin (0.0) Determine the slope S of the
graph and its intercept C
Evaluate P=C/S. using your graph determine
the current I when I=55cm.
State two precautions taken to ensure
accurate result
Explain what is mean by potential difference
between two point in an electric circuit.
State two factor on which the resistance of
a wire depend.
The resistivity of a given wire of cross
sectional area 0.7mm���2 is 4.9x10-4
ohm�s
Calculate the resistance of two length of a
wire�
#CIRCUTE DIAGRAM#
LIGHT
I. Trace the outline ABCD of a glass block on
a sheet of paper as shown above.
II. Remove the block mark a position very
close to A draw the normal at the point N.
III. Draw the incident ray such that the angle
of incidence i=20�o
IV. Fix two pins at the point P and Q on the
incidence ray
V. Replace the black and fix two other pins
at R and S such the pins appear to be at P
and Q when viewed through side D.C of the
glass block.
VI. Remove the block and join the points at R
and S producing the line to meet DC at F
VII. Join NF
VIII. Draw the normal EF, at F and produce it
to meet the force AB at G
IX. Extend PG to meet the normal EF at H.
X. Measure and record in the table below NF
and NH
Repeat the experiment i=30�o,40�o, 50�o,
and 60�o in each case, measure NF and read
your readings in the table below.
Plot a graph of NF on the vertical axis and
NH on the horizontal axis. Determine the
slope of the graph.
State two precautions to obtain accurate
result
State Snell�s law of refraction
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