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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

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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 :
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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