NOV/DEC NECO GCE PHYSICS PRACTICAL ANSWER AND EXPO 2017

2017 NECO Gce Physics Practical Expo | 2017 Neco Gce Physics Practical Questions And Answers/Runz | NOV/DEC NECO GCE PHYSICS PRACTICAL ANSWER AND EXPO 2017 – Read more.

NOV/DEC NECO GCE PHYSICS PRACTICAL ANSWER AND EXPO 2017

NOV/DEC NECO GCE PHYSICS PRACTICAL ANSWER AND EXPO 2017

In this article we released basic steps and frequent asked, past questions and answers for your consumption. Please take your time and get NOV/DEC NECO GCE PHYSICS PRACTICAL ANSWER AND EXPO 2017.

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(1ai – 1aiii)
i: 1, 2, 3, 4, 5, 6
X(cm): 10.00, 15.00, 20.00, 25.00, 30.00
Y(cm): 20.00, 17.40, 15.20, 12.60, 10.40
Z(cm): 17.40, 15.20, 13.40, 11.20, 9.40
P= y-z(cm): 2.60, 2.20, 1.80, 1.40, 1.00

(1aiv)
GRAPH

(1av)
Slope = Δmx/Δmp
Where (Δ means change)
S= 30-10cm/
2.60-1cm
S = 20/1.60
S = 12.50

(1avi)
U = 100/s
= 100/12.50
= 8

(1avii)
(i) I will avoid error due to parallax while reading the metre rule
(ii) I will ensure the mass is kept dried before weighing

(1bi)
Weight in air = 10/1000
= 0.01kg
Weight in water = 9.75kg
9.75/9.75-0.01
= 9.75/9.74 = 1.00
Density of solid = 1/1000 = 0.001g/cm-³

(1bii)
It is because the molecules of the particles is packed together and no space for air interference while solid pieces of iron has volatile or irregular pattern which allows air interference

 

(3ai – 3aii)
TABULATE :
Readings: 1,2,3,4,5
R(n): 1.00,2.00,3.00,4.00,5.00
R^-1(n^-1): 1.000,0.500,0.333,0.250,0.200
l(cm): 13.50,27.50,41.50,55.00,69.50
l^-1(cm^-1): 0.074,0.036,0.024,0.018,0.014

(3av)
Slope=Change in R^-1/Change in L^-1
=(0.500-0.200)/(0.036-0.018)
S=0.30/0.018
=16.67cm/n

(3avi)
Rs=100/16.67
Rs=5.99880n/cm
Rs=6.0n/cm

(3avii)
-I must be ensured of accurate readings thrrough my resistance box
-I must be ensured of tight connections throughout my experiments

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