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Physics 3 (Practical) (Alternative A) – 09:30am – 12:15pm (1st Set),
Physics 3 (Practical) (Alternative A) – 12:45pm – 3:30pm (2nd Set)
(1)
(1axi)
(PICK ANY TWO)
(i) I avoided parallax error by placing my eyes vertically on the meter rule when taking my readings.
(ii) I avoided drought by closing the windows and switching off the fans
(iii) I avoided zero error by making necessary adjustment to the meter rule before starting my practicals.
(3)
CMPLETED!!
PHYSICS SPECIMEN:
QUESTION 1:
– A load of mass 100g concealed and labelled as P
– A load of mass 20g concealed and labelled as Q
– A set of masses m (40g, 50g, 60g, 70g and 80g)
– Metre rule
– 100cm piece of string
– Stop watch
– Helical spring
– Retort stand set-up
– Knife edge
QUESTION 2:
– A rectangular block (glass or Perspex) measuring at least 10cm×9cm
– Drawing sheet
– Drawing board
– Four optical pins
– Drawing pins
– Triangular prism
– Half metre rule
– Plane mirror
QUESTION 3:
– 1Ω standard resistor labelled R
– Rheostat
– Voltmeter
– Ammeter
– Key/switch
– Source of emf, E=2F
– Ten connecting wires
– Resistance box
– Jockey
– Metre bridge
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WAEC Physics Practical Specimen 2023
The WAEC Physics Practical Specimen 2023 contains a list of the apparatus, materials, and chemicals that will be used in the Physics Practical examination.
QUESTION 1:
- A load of mass 100g concealed and labelled as P
- A load of mass 20g concealed and labelled as Q
- A set of masses m (40g, 50g, 60g, 70g and 80g)
- Metre rule
- 100cm piece of string
- Stop watch
- Helical spring
- Retort stand set-up
- Knife edge
QUESTION 2:
– A rectangular block (glass or Perspex) measuring at least 10cm×9cm
– Drawing sheet
– Drawing board
– Four optical pins
– Drawing pins
– Triangular prism
– Half metre rule
– Plane mirror
QUESTION 3:
– 1Ω standard resistor labelled R
– Rheostat
– Voltmeter
– Ammeter
– Key/switch
– Source of emf, E=2F
– Ten connecting wires
– Resistance box
– Jockey
– Metre bridge
You should familiarize yourself with the list and ensure that you know how to use each item. The following is a list of the apparatus, materials, and chemicals that you should be familiar with:
- Retort Stand
- Meter Rule
- Thermometer
- Stop Watch/Clock
- Lens (Convex, Concave, or Plano-convex)
- Split Cork
- Screw Gauge
- Plain Mirror
- Glass Block
- Drawing Board
- Four Optical Pins
- Beaker (0-500 cm3)
- Water
- Kerosene
- Metre Rule
- Weight Hanger
- Spring Balance
- Set of Masses
- Pendulum Bob
- Thread
Here is Our Previous Physics Practical Answers
(1)
(3)
Answers Loading…
SPECIMEN:
(1)
Tabulate.
S/N: 1|2|3|4|5|
M|g: 40.0|35.00|30.00|25.00|20.00|
θ°: 41.80|35.70|30.00|24.60|19.47|
ϕ=(90-θ°): 48.20|54.30|60.00|65.40|70.53|
Cosϕ: 0.6665|0.5835|0.5000|0.4163|0.3333|
CLICK HERE FOR THE IMAGE
(1xi)
Slope , S=Δm|g/ΔCosϕ
=(40-20)g/0.6665-0.3333
S= 20g/0.3332
=60.024g
(1xii)
K=s/2 = 60.024g/g
=30.012g
(1xiii)
-Precautions-
(i) I avoided error due to parallax when reading from the protractor.
(ii) I ensured that the force board is firmly and correctly clamped to the retort stand
(1x)
GRAPH:
CLICK HERE FOR THE IMAGE
(1bi)
They have the same magnitude/size
They can be obtained/calculated by the same means
(1bii)
T² = 9²+12²
T = √81+144
T = √225
T = 15N
CLICK HERE FOR THE IMAGE
=============================================
(3)
Tabulate
S/N: 1|2|3|4|5|
R/Ω: 2.00|4.00|6.00|8.00|10.00|
L/cm: 50.00|66.70|75.00|80.00|83.30|
B/Ω^-¹: 0.500|0.250|0.167|0.125|0.100|
Δ/cm: 1.000|0.499|0.333|0.250|0.200|
CLICK HERE FOR THE IMAGE
(3xiii)
Slope, S=ΔB/Ω^-¹/ΔD/cm = 0.5-0.1/1.0-0.2 = 0.4/0.8=0.5
Slope = 0.5Ω^-¹/cm
(3xiv)
K=S^-¹ = 1/5 = 1/0.5Ω^-¹/cm
=2Ωcm
(3xv)
-PRECAUTIONS-
(i) I avoided error due to parallax when reading from the potentiometer
(ii) I ensured that the wires are tightly connected.
(3)
GRAPH:
CLICK HERE FOR THE IMAGE
(3bi)
(i) Potentiometer give exact value of potential difference while voltmeter draws apart of the current
(ii) Potentiometer can be used for measuring the internal resistance of a cell which cannot be done with a voltmeter.
(3bii)
x/R = c/100 0 – c
x/R = 20-0/100 – 20
x/20 = 20/80
x = 20*20/80
x = 400/80
x= 5Ω
CLICK HERE FOR THE IMAGE
Physics OBJ:
1CBBBCACBBB
11BCCCABBCBB
21DCDADDBDDA
31BDDBBCAABC
41ABDABDCBBA
NOTE:
* means multiplication
/ means division
^ means raise to power
√ means square root
+++++++++++++++++++++++
SCROLL DOWN NO: 1,2,3,4,5,6,8,9,AND 11 UPLOADED
(1)
Mass = 20g = (20/100)kg = 0.02kg
Extension = 5cm = (5/100)m = 0.05m
K = 200N/
V = ?
1/2mv² = 1/2ke²
V = √ke²/m = √200×0.05×0.05/0.02
V = √25
V = 5m/s
===================
(2a)
P – Initial velocity of the projectile
B – Angle of projection
H – Maximum height reached by the projectile
R – Range or the total horizontal distance covered by the projectile
(2b)
R=P^2 sin 2β/g
at maximum range sin2β=1
Rmax=P^2/g
This happens at β = 45degree
(3)
(i)reflection
(ii)refraction
(iii)diffraction
(4)
(i)Magnetic Declination
(ii)Horizontal Component of Earth’s Magnetic Field
(iii)The angle of Dip or Magnetic Inclination
(5a)
Free electrons are electrons in a material which can contribute to electric current.
(5b)
hole is the absence of an electron in a particular place in an atom
(6a)
Principle of operation of fiber optics state that the density of transparent glass and the refractive index is greater than the density of the two mirrors
(6b)
(i)it is used to view deep down the throat of a patient
(ii)it is used to conveying information
(8ai)
It state that every particles in the universe attract every other particle with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between them
(8aii)
Gravitational field is a region of space around a mass on which the gravitational force of the mass can be felt
(8bi)
F=GMeM/re^2 ——from newton’s law
Where Me is mass of earth
re is the distance of mass from earth
G is a constant of gravitation
But F=GMeM/re^2 =mg
Me=GMe/re^2=g
g=GMe/re^2
(8bii)
(i)That The earth is a sphere
(ii)That g depends on mass of earth alone
(8c)
Using F = GMeM/r^2
F=6.6710^-115.9810^242.0010^3degree/(1.5010^810^3)^2
F= 79.773210^43/2.2510^22
F=35.45510^21
=3.5455*10^22N
(8di)
Escape velocity (Ve) is the minimum velocity required for an object (egg statelite) to just escape or leave the gravitational influence or field of an astronomical body (eg earth) permanently
(8dii)
(i)g varies across the earth but G is constant
(ii)the unit of g is m/s^2 while that of G is NM^2/Kg^2
====================
(9a)
Latent heat is energy released or absorbed, by a body or a thermodynamic system, during a constant-temperature process.
(9aii)
(i)surface area in contact with atmosphere
(ii)nature of the liquid
(9bi)
Clay is poorer conductor of heat than plastic
(9bii)
An increase in pressure in the cooker increase the ambient temperature in the cooker hence the food cooks faster
(9c)
(i)Change in the state of a substance
(ii)Increase in temperature
(9di)
Heat supplied = m1
lvt = m1
12401400=1.51
L=12401400/1.5
L=672000/1.5= 448,000J/kg
Laten heat of fusion of the body = 4.4810^5J/Kg
(9dii)
lvt=mc D tita
124072=1.5c60
C=124072/1.5*60
C=384J/Kg/K
Specific heat capacity of the body =384J/Kg/K
================
(11)
(11ai)
Force is anything that causes motion.Its S.I unit is Newton(N) or Kgm/s^2
(11aii)
(i) Static friction
(ii) Dynamic friction
(11bi)
DRAW THE GRAPH
(11bii)
Deceleration
during last 5s=18/5=3.6m/s^2
(11biii)
Total distance=S1+S2+S3+S4
=(3020)+1/2(18+30)(6)+(1810)=(1/2518)
=600+144+180+45
=969metres
COMPLETED.
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