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This is actually the 2018 Waec Gce Physics answers. Answers as questions sent to our subscribers on WHATSAPP, if you are looking for 2020 WAEC/NECO Answers midnight before the exam, try contacting us.
(12a)
(i) Cosmic rays
(ii) Rocks and soils
(12b)
Because the mass of a radioactive isotope decreases exponentially. Also, the source and intensity of radiation differs.
(12c)
(i) Dielectric materials
(ii)
(12d)
(i) Alpha radiation
(ii) Beta radiation
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(6a)
(i) It can cause short and long term sun burn effects.
(ii)It can cause blindness when flashed to the eyes.
(6b) Energy = hf
= 6.60×10^-34 × 4.82×10^14
= 3.18×10^-19J
= 1.99ev
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(7)
V = 2Ï€R/T
R = 9.6×10^6 + 6.4×10^6 =16×10^6 m
T = 24hrs =(24×60×60)s
V = 2×3.142×16×10^6/24×60×60
V = 1162.96m/s
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(11a)
Lenz's law states that an induced current is in such direction that it's magnetic effect opposes the change by which the current is induced.
(11b)
(i) Magnets are used in construction of speakers.
(ii) They are used to store data in computers.
(iii) Used in magnetic resonance imaging machines.
(11ci)
(a) Two coils: So as to produce an induced current from one coil to the other.
(b) an iron core: To increase the strength of the magnetic field.
(11cii)
(11d)
Total resistance in series
Rt = R1 + R2
= 500 + 400
Rt = 900ohms
Taking E = 6v
E = V + ir
E = VR + Ir
E = I ( R + r)
I = E/R + r
taking r = 200ohms
I = 6/900+200
I = 6/1100
I = 0.005A
Hence the voltmeter reading
V = IR
= 0.005 × 200
= 1.09v
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(1a)
Young modulus of a material or the modulus of elasticity.
(1b)
Potential Energy to kinetic Energy.
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(2)
e = 0.7m
m=60 × 10-³kg = 6.0×10-²kg
K = 200Nm-¹
W = 1/2ke² = 1/2mv²
1/2ke² = 1/2mv²
V² = ke²/m = 200×0.7²/6.0×10-²
V² = 98×10²/6
V² = 16.33×10²
V = √1633
V = 40.4
Speed = 40.4ms-¹
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(3)
(i) Optical fibres have extremely high bandwidth
(ii) They have longer transmission distance
(iii) They have resistance to electromagnetic interference
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(4a)
It is used in geometric stations used to move a satellite from low earth orbit into a geostationary orbit.
(4b)
Polar orbit satellite is used in earth mapping.
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(5a)
(i) Centripetal force
(ii) Centrifugal force
(5b)
Ft = mDv
where F = force
t = time
Dv = change in velocity
m = mass of object
Hence F = mDv/t
Similar to WAEC, your National Examination Council (NECO) result (certificate) is valid for life. It doesn't have any expiry date. That is, for as long as you live, you can use your NECO result to gain admission into the university and seek employment where applicable.
Ngozi Osarenren has said that the regional examination body WAEC (West African Examination Council) is better and more effective than its Nigerian counterpart, National Examination Council (NECO). ... ?What we should be talking about is the sanctity and credibility of our exams; not the duplicity of exam bodies.? Prof.
Yes. You can gain admission into any institution in Nigeria with your NECO result. This is because, NECO is a national examination body, which is is responsible for conducting examination for students who are aspiring to further their education to tertiary level in Nigeria. ... They all accept NECO results in Nigeria.
The following are the approved fees for the examination and other related items: Registration fees ? 4,000.00 Naira (Mandatory fee) Late Registration ? 1,000.00 Naira per candidate ? (Mandatory fee) Re-Sit Exam ? 1,000.00 Naira per copy.
The answer is yes. NECO can be used to study abroad but not all schools abroad accept it. ... First of all, an applicant with a NECO result must sit for a proficiency English language exam such as GRE, IELTS, SAT, ACT, PSAT, TOEFL, GMAT, and the likes.
Reasons Why NECO Result is Accepted for Study in Canada. You sure read that correctly, NECO result is accepted for study in Canada if you did't know. And if you already know this, you definitely would have been surprised when you read the caption since NECO is a Nigerian examination.
Yes! It is possible to combine WAEC and NECO result for admission into any tertiary institutions in Nigeria. Many universities in Nigeria allow for the combination of both WAEC and NECO result.
National Examinations Council, otherwise known as NECO, is a national examination body established by the Nigerian government to conduct examinations. Unlike WAEC, NECO is a national examination body vested with the responsibility to oversee specified exams only in Nigeria.
NECO SSCE External Candidates Original Result Slips Cost: The Sum of One Thousand Naira Only (N1,000). NECO SSCE External Candidates Issuance of Original Certificate Cost: The Sum of One Hundred Naira Only (N100).
The fact is your O'level result; be it WAEC , NECO or NABTEB is valid for a life time and has no expiration date. The Examination conducted by these examination bodies is known as ?achievement test? and therefore the certificates awarded are valid forever.