2022 NECO physics answers - Verified 2022 WAEC EXAM English Questions and Answers

PHYSICS OBJ


1-10: BCBDBDCDCD
11-20: DACBEBABDE
21-30: CDDDABBBAC
31-40: CDAEBBCCDC
41-50: BEEBDBAEEC
51-60: DDCDADDEBD

 

 

==COMPLETED==



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gistpower.com answers

(1ai)
[Choose ANY ONE]

2022 NECO physics answers 2022 WAEC EXAM English  Questions and Answers WAEC English Questions and Answers 2022. WAEC Eng Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2022 NECO physics answers. 2022 WAEC EXAM English  Questions and Answers

2022 NECO physics answers 2022 WAEC EXAM English  Questions and Answers WAEC English Questions and Answers 2022. WAEC Eng Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2022 NECO physics answers. 2022 WAEC EXAM English  Questions and Answers
-Printer
-Photocopy machine
-Label maker
-Document scanner

(1aii)
Sterilizer

(1b)
Draw the diagram.

(1c)
I = 1.26A
t = 4800s
m = ?
Z = 3.3×10^-⁴gc-¹
m = ZIt
m = 3.3×10^-⁴×1.26×4800
m = 1.996g
2022 NECO physics answers 2022 WAEC EXAM English  Questions and Answers WAEC English Questions and Answers 2022. WAEC Eng Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2022 NECO physics answers. 2022 WAEC EXAM English  Questions and Answers

=============================================

 

(3a)
Velocity is defined as the rate of change of distance moved in a specific direction or the rate of change of displacement.

(3b)
U = 0m/a
V = 20ms-¹
t1 = 20s
t2 = 30s
t3 = 10s

Draw the diagram
2022 NECO physics answers 2022 WAEC EXAM English  Questions and Answers WAEC English Questions and Answers 2022. WAEC Eng Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2022 NECO physics answers. 2022 WAEC EXAM English  Questions and Answers

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(5a)
[Choose ONLY ONE]
-They are both scalar quantity.
-They are both connected with work.

(5b)
R0 = 25ohms
R100 = 100ohms
R = ?
Tita = 67°c
Tita= Rtita-R0/R100-25 × 100
67 = R - 25/100 - 25 × 100
67 = (R0 - 25)/75 × 100
R0 - 25 = 67 × 75/100
Rtita - 25 = 50.25
Rtita = 50.25+25
Rtita = 75.25ohms


================
 

(9a)
It simply means that the ratio of resistance and impedance is 1 and the maximum power is obtained in such circuit.

(9b)
V² = Vr² + Vc²
15² = 12² + Vc²
225 - 144 = Vc²
V = √81
Vc = 9
2022 NECO physics answers 2022 WAEC EXAM English  Questions and Answers WAEC English Questions and Answers 2022. WAEC Eng Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2022 NECO physics answers. 2022 WAEC EXAM English  Questions and Answers

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(10a)
(i) Weight
(ii) Upthrust.
(iii) Viscous force.

(10b)
Both viscous force and upthrust acts in upward direction while weight act downward in order to balance the force
 

==========================

(11i)

4 A 12 1
He + Be --> X + Y + Z
2 A B C

A = 9
B = 6
C = 1

(11ii)
Z = 0
e ie Beta particles.
-1

(11iii)
Nuclear fusion
W = v + u


============

(12a)
(i) Friction.
(ii) Upthrust.

(12aii)
(i) Force causes motion
(ii) Force causes stress/strain

(12b)
Draw the diagram [https://i.imgur.com/j8jNZmi.jpg]

(12c)
Draw the diagram [https://i.imgur.com/j8jNZmi.jpg]
(i) Taking moment about pivot
CW moment = ACW moment
36×25 = X×15
X = 36×25/15 = 60g

(ii)
Draw the diagram[https://i.imgur.com/j8jNZmi.jpg]
60 × X = 36 × (30 - X)
60X = 1080 - 36x
96X = 1080
X = 1080/96 = 11.25
Distance = 11.25 from the zero end.


==================

(13ai)
(i) Dew
(ii) Mist

(13aii)
(i) Both require the supply of heat.
(ii) Vapour is expelled when both processes occur.

(13b)
An object initially at a height, say H has a tiny potential energy. As it falls and now at a height say h, the potential energy reduces and kinetic energy increases. The kinetic energy because it is equal to the P.E at height H when the object just strikes the ground.
NB: At any point, mechanical energy is conserved.

(13ci)
Given V.R = 5, Load L = 500N
Workdone against friction
= Total workdone - work output by system.
= 7200 - (500 × 12)
= 7200 - 6000
= 1200J

(13cii)
Efficiency = work output/work input × 100%
= 6000/7200 × 100%
= 83.33%
2022 NECO physics answers 2022 WAEC EXAM English  Questions and Answers WAEC English Questions and Answers 2022. WAEC Eng Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2022 NECO physics answers. 2022 WAEC EXAM English  Questions and Answers

=================

(14a)
Given y = Asin2pie(t/T - x/lander)

(i)
T represents period.
Lander represents wavelength.

(ii)
T = 2pie/w
T = 1/f

(14bi)
(i) Microscope.
(ii) Telescope.

(14bii)
Refraction involves two media, while reflection involves one medium.

(14ci)
Frequenxy of wave f = v/lander
= 0.6/0.04 = 1.5 Hertz

(14cii)
Refractive index of water = speed in deep water/speed in shallow water.
= 0.8/0.6 = 4/3
2022 NECO physics answers 2022 WAEC EXAM English  Questions and Answers WAEC English Questions and Answers 2022. WAEC Eng Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2022 NECO physics answers. 2022 WAEC EXAM English  Questions and Answers

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(15a)
The potential difference between any two points in an electric field is defined as the work done in moving a positive charge of 1 coulomb from one point in the electric field to another.

(15b)
Diagram [CHECK THE DIAGRAM BELOW]

(15c)
Given: Power p = 1200w, Voltage v = 220v
(i)Resistance, R = v²/p = 220×220/1200 = 40.3ohms

(ii)
Energy consumed by one heater = Power × time
= 1200 × 5
= 6000watt-hours
= 6kWh
Energy consumed by 5 heaters = 5 × 6 kWh
= 30kwh
Cost = 30 × 4
= #1,020.00
2022 NECO physics answers 2022 WAEC EXAM English  Questions and Answers WAEC English Questions and Answers 2022. WAEC Eng Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2022 NECO physics answers. 2022 WAEC EXAM English  Questions and Answers

 

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2022 NECO physics answers 2022 WAEC EXAM English  Questions and Answers WAEC English Questions and Answers 2022. WAEC Eng Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2022 NECO physics answers. 2022 WAEC EXAM English  Questions and Answers2022 NECO physics answers 2022 WAEC EXAM English  Questions and Answers WAEC English Questions and Answers 2022. WAEC Eng Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2022 NECO physics answers. 2022 WAEC EXAM English  Questions and Answers


WAEC English Questions and Answers 2022. WAEC Eng Expo for Theory & Objective (OBJ) PDF: verified & correct expo Solved Solutions, 2022 NECO physics answers. 2022 WAEC EXAM English Questions and Answers

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