Neco 2017 Physics Practical Answers – June/July Expo
Neco 2017 Physics Practical Answers – June/July Expo
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NOTE:
Tita means θ
^ means Raise to power
Pie means π
/ (means) division or divide
2 whole no 3/4 means 2¾
* means
multiplication (×)
Sqr root means √
Proportional means ∝
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Use this number 2
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(2av)
TABULATE
S/N:1,2,3,4,5,6
U(cm):30.00,35.00,40.00,45.00,50.00,55.00
V(cm):25.50,24.50,23.50,22.50,21.50,20.50
M=V/U:0.850,0.700,0.588,0.500,0.430,0.373
(2avi)
Draw the graph
(2bi)
Using 1/f=1/v+1/u
1/20=1/v+1/25
1/20=(25+v)/25v
25v=20(25v+v)
25v=500+20v
5v=500
v=500/5
v=100cm
Image distance =100cm in front of the mirror
(2bii)
Draw the diagram
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Little changes made in table of number 3avii.
Pls use below table thanks
3avii)
Vo=0.35V
TABULATE
S/N:1,2,3,4,5,6
R(ohm):6.0,5.0,4.0,3.0,2.0,1.0
V(v):2.50,2.40,2.30,2.20,2.00,1.90
P=E-V(v):0.10,0.20,0.30,0.40,0.60,0.70
I=V/R(v/2): 0.417,0.480,0.575,0.733,1.000,1.900
(3aviii)
DRAW THE GRAPH
(3aix)
Slope=change inV^-1/Change inR^-1
=(7.6-4.3)/(0.84-0.10)
3.3/0.74
=4.460
(3ax)
I=0.385
I^-1=(0.385)^-1
=2.597
(3axi)
-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
(3bi)
Ohm's law states that the electric current passing through a metallic conductor at constant temperature is directly proportional to the potential difference apllied between its ends
(3bii)
Since I =Total emf/R+r
I=3E/R+3r
Typing....
Stay online
Today is the first day of Neco... For this.. We're going to experience delay in the questions paper and answers... Other days will be earlier.. Thanks
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We're At Work
PLS STAY ONLINE AND
KEEP REFRESHING THE PAGE TO KNOW WHEN THE ANSWERS IS POSTED
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
ANSWERS LOADING....
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
KEEP REFRESHING THIS PAGE
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
NOTE:
Tita means θ
^ means Raise to power
Pie means π
/ (means) division or divide
2 whole no 3/4 means 2¾
* means
multiplication (×)
Sqr root means √
Proportional means ∝
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Use this number 2
=================================
(2av)
TABULATE
S/N:1,2,3,4,5,6
U(cm):30.00,35.00,40.00,45.00,50.00,55.00
V(cm):25.50,24.50,23.50,22.50,21.50,20.50
M=V/U:0.850,0.700,0.588,0.500,0.430,0.373
(2avi)
Draw the graph
(2bi)
Using 1/f=1/v+1/u
1/20=1/v+1/25
1/20=(25+v)/25v
25v=20(25v+v)
25v=500+20v
5v=500
v=500/5
v=100cm
Image distance =100cm in front of the mirror
(2bii)
Draw the diagram
=====================================
Little changes made in table of number 3avii.
Pls use below table thanks
3avii)
Vo=0.35V
TABULATE
S/N:1,2,3,4,5,6
R(ohm):6.0,5.0,4.0,3.0,2.0,1.0
V(v):2.50,2.40,2.30,2.20,2.00,1.90
P=E-V(v):0.10,0.20,0.30,0.40,0.60,0.70
I=V/R(v/2): 0.417,0.480,0.575,0.733,1.000,1.900
(3aviii)
DRAW THE GRAPH
(3aix)
Slope=change inV^-1/Change inR^-1
=(7.6-4.3)/(0.84-0.10)
3.3/0.74
=4.460
(3ax)
I=0.385
I^-1=(0.385)^-1
=2.597
(3axi)
-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
(3bi)
Ohm's law states that the electric current passing through a metallic conductor at constant temperature is directly proportional to the potential difference apllied between its ends
(3bii)
Since I =Total emf/R+r
I=3E/R+3r
Typing....
Stay online
Today is the first day of Neco... For this.. We're going to experience delay in the questions paper and answers... Other days will be earlier.. Thanks
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
We're At Work
PLS STAY ONLINE AND
KEEP REFRESHING THE PAGE TO KNOW WHEN THE ANSWERS IS POSTED
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
ANSWERS LOADING....
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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