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Pls Trace It From Your Objective.
[If you see any options here pick it from your objective thank You.]

Physic-Ob!
1. Gravitational force
2. Kinetic or potential
3. Violet
4. Tesla
5. Electric motor
6. Loudness
7. Electric field
8. Constriction
9. Lead
10. Good absorbers of radiant heat are good emitters
11. Decrease
12. Sound wave
13. [img]https://i.imgur.com/GRHScLd.jpg[/img]
14 I and IV only
15. Diaphragm
16. Multiplier is high resistance change it to voltmeter
17. P is at the level with Q
18. 34.0⁰C
19. 0.02secs
20. 2.7*10kg/m³
21. Centripetal force applied in the wheel rotates it
22. Mg(sθ-μcosθ)
23.0.60Ω^-¹m^-¹
24. 800N
25. Both earth and Moon travel around the sun
26. 0.04secs
27. 0.25*10³Ω
28. 2uf
29. Radiate specific values of energy of electromagnetic waves
30. 6m/s²
31. 0.67
32. Axe
33. Mass of the conductor
34. 20ms^-¹
35. Charge ionises the sorrounding air
36. East west
37. 33.3A
38. 27.8m
39. 17N
40. 40g
41. Critical angle
42. Momentum
43. Mixture of gases
44. J
45. Jumps to a higher permissible energy level
46. Mass of the liquid
47. Spring balance
48. Argon
49. Images are formed behind the mirror always
50. Charles coloumb

The Eng Of Wahala Waec Gce Physics Obj.
Make sure you trace it.
=====================================

(8ai)
Work is said to be done whenever a force moves a body through a
certain distance in the direction of force and is equal to the product
of the force and the distance moved.
(8aii)
Workdone = Force * distance
= F*S
F = m(v/t)
Workdone = m(v/t) * 1/2vt
= 1/2mv²
Ek = 1/2mv²
ie workdone = change in kinetic energy of the body
(8bi)
Kinetic friction is the force that must be overcome so that a body
can move with uniform speed over another body
(8bii)
(i)Nature of surfaces in contact
(ii)Depends on the normal force pressing the surfaces together
(8ci)
Tc – umg = ma
Tc – (0.3 * 3* 10)= 3*2
Tc – 9 = 6
Tc = 9+6 = 15N
(8cii)
TB – 2umg = ma
TB – 2(9)= 3*2
TB = 6+18
TB = 24N
(8ciii)
TA – 3umg = ma
TA – 3(9) = 3*2
TA – 27 = 6
TA = 6+27
TA = 33N
==
9bi)
Kink or construction

(9bii)
Fine narrowbore

(9biii)
Thing glass tube or bulb
==
(1)
(i)They are use to find the unit of a given physical quantity in a
given system of units.
(ii)They are use to find dimensions of physical constants or
coefficients.
(iii)They are use to convert a physical quantity from one system of
units to another.
===
Number 5)

(5a)
Forbidden gap is the group of energy levels that cannot be occupied by the electrons, these energies lies in between conduction band and valence band.

(5b)
(i) free electrons which have negative charges
(ii) holes, which have positive charges
==
(7a)
Magnetic materials are materials studied and used mainly for their magnetic properties. The magnetic response of a materials is largely determined by the magnetic dipole moment associated with the intrinsic angular momentum, or spin, of its electrons.

(7b)
(i)by heating past the Curie point
(ii)by applying a strong magnetic field


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2020 WAEC GCE PHYSICS ESSAY & OBJECTIVE Questions and Answers

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