Waec 2017 Physics Practical Alternative A QUESTION AND ANSWERS Free Expo Answers

Waec 2017 Physics Practical Alternative A QUESTION AND ANSWERS Free Expo Answers

Monday 3rd April, 2017
Physics 3 (Practical) (Alternative A) 09.30am - 12.15pm (1st Set)
Physics 3 (Practical) (Alternative A) 12.40pm - 3.25pm (2nd Set)
Get Free Answers: 2017 /2018 
PHYSICS PRACTICAL Answers and Questions – Free Expo

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2b)

bi)The boiling point of a liquid is the temperature

at which the vapor pressure of the

liquid equals the pressure surrounding the liquid

and the

liquid changes into a vapor.

bii) impurities increases the temperature range a

substance can exist as a liquid

================

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

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