Waec Physics Practical Answers 2022 for 31st May

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WAEC PHYSICS PRACTICAL ANSWERS 2022

(NO1)

Graph

(1b and the rest)

(1x)
(Tabulate)
S/N: 1|| 2|| 3|| 4|| 5||

M(g): 20.00|| 40.00|| 60.00|| 80.00|| 100.00||

Z(cm): 40.00|| 35.00|| 30.00|| 25.00|| 20.00||

y(cm): 35.00|| 30.00|| 25.00|| 20.00|| 15.00||

x(cm): 10.00|| 15.00|| 20.00|| 25.00|| 30.00||

V: 0.2857|| 0.5000|| 0.8000|| 1.2500|| 1.2500|| 2.0000||


(1xiv)
(i) I avoided parallax error when taking readings from the meter rule
(ii) I avoided drought by switching off the electric fans

(1bi)
An object is said to be in a stable equilibrium a slight displacement, the object tends to return back to its original position.
°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°

(3)

-Precautions-
(i)I will avoid Parallax error was avoided on ammeter
(ii)I will ensure Key opened when reading was not being taken
(iii)I will avoid sliding of jockey on the potentiometer wire.
Graph

(3b and the Rest)

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Waec Physics Practical Answers 2022 for today Tuesday 31st May 2022

Waec Physics Practical Answers 2022 for 31st May 2022

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Our Waec questions and answers also contain both Waec 2022 Physics Practical theory questions and also the correct 2022 Waec Physics Practical questions and answers for Objective all in this July/August Waec 2022 Physics Practical question and answer. The questions and answers were sourced from an insider of the Waec African examination council and were confirmed to be accurate by another insider of the West African Examination Council. The Waec Physics Practical questions 2022 also contain the Waec 2022 Physics Practical answers to both theory Questions and Objective questions. There is a need to carefully look into the Waec Physics Practical 2022 questions and answers for all those who want to get there As and make it through in Waec 2022.

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Waec Physics Practical Exam Date 2022

Tuesday, 31st May 2022

• Physics 3 (Practical) (Alternative A) 09:30am – 12:15pm (1st Set)
• Physics 3 (Practical) (Alternative A) 12:45pm – 3:30pm (2nd Set)

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Waec Physics Specimen 2022 (PHYSICS APPARATUS)

QUESTION 1

• Metre rules;
• Set of masses (20 g, 40 g, 60 g, 80 g, and 100 g);
• Knife edge;
• Five pieces of thread each of length about 50cm;
• Weighing balance.

QUESTION 2

• Laboratory thermometer;
• 600 ml supply of water;
• Retort stand and clamp;
• One copper calorimeter, 150 ml capacity; unlagged;
• Glass rod stirrer
• Non-conducting pad for a calorimeter (e.g. cardboard);
• Measuring cylinder (200 ml);
• Stop watch/clock;
• Bunsen burner/source of heat.

QUESTION 3

• Voltmeter (0 – 2 V);
• Two dry cells (1.5 V each) connected in series (connecting leads should be provided for the battery);
• Potentiometer;
• Key/switch;
• Jockey;
• Metre bridge;
• Connecting wires;
• Ammeter (0 – 2 A).

CONDUCTING THE PRACTICAL PHYSICS TEST

• 3. The following announcement should be made to the candidates at the beginning of the examination:

See the full specimen here: Waec Physics Practical Specimen 2022

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Give us our A’s and B’s.
And forgive us our mistakes.
In Practical, Objectives, and Theory Papers, help us to succeed.
As we forgive those who copy from us,
Deliver us from failures and pending errors.
Show your power and glory to take us 100 Level in Universities/Polytechnics.
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Waec Physics Practical Answers 2022, Waec Physics Practical Questions and Answers 2022, Waec Physics Practical Expo 2022, Waec Physics Practical Runs 2022.

Some Past Exam Answers for Reference

(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|

(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 protector
(ii) I ensured that the force board is firmly and correctly clamped to the retort stand

(1)
Graph

(1b)
Coming check by 8;10am
====================================

(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|

(3xiii)
Slope ,S=ΔB/Ω^-¹/ΔΔ/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 wire are tightly connected.

(3)
Graph

(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 voltmeter

2021 NECO PHYSICS-PRACTICAL

(1)

Tabulate

reading- 1,2,3,4,5

masses(m)- 50,53,55,58,60
depth(d)-5.50,5.80.6.00,6.30,6.60
ti(s)- 6.45,6.80,6.85,7.40,7.45
T=t/n(s)- 0.655,0.680,0.685,0.740,0.758
T^2(s^2)- 0.429,0.462,0.469,0.548,0.575
Li(g/cm)- 5.455,5.776,5.833,6.032,6.154
Mli(g)-30.0,33.5,35.0,38.0,40.0

1aix)
i)I avoided parallax error in reading clock/weight balance
ii)I ensue repeated readings are taken to avoid random error

1bi)
i)weight
ii)upthrust
iii)viscous force/drag or liquid friction

1bii)
The amplitude of oscillation of the loaded test tube decreases with time because of the viscous drag(force) which opposes the motion.

(1xii)
(i)i avoided draught.
(ii)i avoided error due to parallax when reading the meter rule.
(iii) I ensured steady oscillation.
(iv) I avoided zero error to the stop clock.
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3)

Table W1
s/n-1,2,3,4,5,6
xn(cm)/d1=0.009m- 3.06,3.50,3.70,4.30,4.50,4.80
xm(cm)converted/- 15.30,16.50,18.50,21.50,22.50,24.40
xm(cm)converted d2=0.005m- 84.70,83.50,81.50,78.50,77.50,75.60
Ri(n)- 11.07,10.12,8.81,7.30,6.89,620

Tabulate W2
s/n-1,2,3,4,5,6
xmi(cm)- 1.40,1.65,1.80,2.20,2.55,2.94
converted/xmi(cm)7.00,8.25,9.00,11.00,12.75,14.70
xni(cm)- 93.00,91.75,91.00,89.00,87.25,85.3
R2i(n)- 26.57,22.24,20.22,16.18,13.69,11.61
slope
dy/dx=26.57-13.69/11.07-6.89
=12.88/4.18
=3.08

3ix)
k=d2/d1*squareroot5
=0.005/0.009*squareroot13.08
=0.56*1.75
=0.98

3x)
i)i would ensure that the terminal are well tightened to avoid partial contact
ii)i would obey the conect connection of positive to positive to negetive to negetive when connecting to circuit

3bi)
when temperature increases the molecules tends to vibrate more intense there by opposing the flow of current

3bii)
P=I^R
P=V^2/R
power=1000W
Voltage=200V
R=?
1000=200^2/R
R=40000/1000
R=40

(3xi)
(i)I ensured tightened connections.
(ii) I avoided error due to parallax on the ammeter.
(iii) I removed key when reading was not taken
(iv) Avoidance of repeated reading from table
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CHOOSE ANY PERFECT TWO FROM EACH

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2021 NECO PHYSICS-PRACTICAL

(1xii)
(i)i avoided draught.
(ii)i avoided error due to parallax when reading the meter rule.
(iii) I ensured steady oscillation.
(iv) I avoided zero error to the stop clock.
=====================================

(3xi)
(i)I ensured tightened connections.
(ii) I avoided error due to parallax on the ammeter.
(iii) I removed key when reading was not taken
(iv) Avoidance of repeated reading from table
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CHOOSE ANY PERFECT TWO FROM EACH

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(1xii)
(i)i avoided drought by closing the window
(ii)i avoided error due to parallax when reading the meter rule
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(3xi)
(i)I ensured tight connections
(ii) I avoided error due to parallax on the ammeter
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1. Thermodynamics, science of the relationship between heat, work, temperature, and energy. In broad terms,thermodynamics deals with the transfer of energy from one place to another and from one form to another.
2. THERMO DYNAMIC SYSTEM: A system is defined as a region in space containing a quantity of matter whose behaviour is being investigated. This quantity of matter is separated from its surroundings by boundary, such as they walls of a vessel.
(3a)
(xii)
(i)I ensured tight connections on all terminals
(ii) I avoided error due to parallax on the ammeter

(3bi)Period refers to the amount of time it takes a wave to complete one full cycle of oscillation or vibration. Frequency, on the contrary, refers to the number of complete cycles or oscillations occur per second. Period is a quantity related to time, whereas frequency is related to rate. Period simply refers to the time for something to occur periodically, whereas frequency means how often that happens.

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