2017 WAEC PHYSICS PRACTICAL QUESTIONS AND ANSWERS

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1)
Tabulate
i= L(cm)| |t1(s)| |t1(s)| |mean t(s)| |t(t/10)
s| |logt(s)| |log Lcm| |Log T*10^-2|(s)| |Log
L*10^-2(cm)
1= |80.00| |17.87| |17.56| |17.715|
|17.715| |0.2483| |1.9031| |24.83|
|19.031|
2= |7000 1622 1646 16340 16340 02133
18457 2133 18451
3= |6000 1609 1509 15590 15590 01928
17782 1928 17782
4= |5000 1408 1477 14425 14425 01591
16990
5= |4000 1328 1336 13320 13320 01212
1591 16990 1212 16021
slope (s) Log T2*10^-2/Log T2*10^-1 – Log
T2*10^-2/Log T2*10^-1 = (21.33-12.12(s))
*10^-2/(18.50-16.02(cm)*10^-1)
=3.714*10^-1
=0.3714cm^-1
1axi)
i)ensured supports of pendula were rigged
ii)avoided parallax error on meter rule/stop
watch
1bi)
simple harmonic motion is the motion of a
body whose acceleration is always direct
towards a fixed point and is proportional to
the displacement from the fixed points
1bii)
T=1.2secs
Log 1.2=0.079
0079 shown on graph with corresponding
Log L read L correctly determined
3axi)
i)ensured clean/tight terminals
ii)open key when reading was taken
3bi)
i)brightness of the bulb increases
ii)voltage/current through the bulb
increases
3bii)
i)diode
ii)transistor
==========COMPLETED==========


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