# 2017/2018 NECO GCE EXPO: PHYSICS PRACTICAL QUESTIONS AND ANSWERS NOW AVAILABLE HERE

2017 NECO GCE PHYSICS PRACTICAL EXPO ,2017 NECO GCE PHYSICS PRACTICAL EXPO,GCE PHYSICS PRACTICAL, 2017 GCE PHYSICS PRACTICAL 2017, 2017 NECO GCE PHYSICS PRACTICALS QUESTIONS & ANSWERS NOW AVAILABLE HERE ,2017 NECO GCE PHYSICS PRACTICALS QUESTIONS & ANSWERS ,2017/2018 NECO GCE physics SPECIMENS EXPO ,2017/2018 NECO GCE PHYSICS SPECIMEN EXPO, NECO GCE PHYSICS PRACTICAL RUNZ / EXPO FOR GCE EXAM, WAEC GCE PHYSICS PRACTICAL RUNZ / EXPO FOR GCE EXAM

Exam Time: Thursday, 26th October , 2017
Physics 3 (Alternative to Practical)
2.00pm – 4.00pm

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=–=-=-=-=-=

INVITE 10 OF YOUR FRIENDS IN THE HALL IF YOU WANT US TO POST ANSWERS HERE

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

NECO GCE PRACTICAL PHYSICS ANSWERS FROM EXAMHOT.COM
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=–=-=-=-=-=-=

(1ai – 1aiii)
i: 1, 2, 3, 4, 5, 6
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

(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

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

2bi) I Rainbow
II Wave length

2v)
​SLOPE​

Slope,s =y2-y1/x2-x1
=56.7-20/4-1
=36.7/3
=12.233
=12.23

2vi)

U = 100/S = 100/12.23
= 8.176
=8.18

2vii)

– I will avoid error due to parallax while reading the meter rule.

-I will ensure the mass is kept dried before weighing

2aiv)
-I ensured tight connections
-I avoided error due to parallax when reading the voltmetre
-I ensured the key is opened after each reading to prevent the cell from running down

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

Mr Hillz cares

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
We’re At Work
PLS KEEP REFRESHING THE PAGE
TO KNOW WHEN ANSWERS IS POSTED HERE

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=