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Mathematics
NECO SSCE 2002
Geometry and Trigonometry
A boy leaves station X on a bearing of 035° to station y which is 21km away. He then travels to another station Z on a bearing of 125°. If Z is directly East of X, what is the distance from X to his present position?
A
3.0km
B
12.04km
C
17.2km
D
34.18km
E
36.61km
medium Difficulty
Verified Correct Answer: Option E
Step-by-Step Mathematical Solution
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #42220)
Mathematics
NECO SSCE 2002
Geometry and Trigonometry
Solution
The length, breadth and height of a cuboid are 8cm, 7\(\frac{1}{2}\)cm and 6\(\frac{1}{2}\) cm respectively. What Is its volume in m3 (leave your answer in standard form)?
A
3.9 × 10-1m3
B
3.9 × 10-2m3
C
3.9 × 10-3m3
D
3.9 × 10-4m3
E
3.9 × 10-5m3
medium Difficulty
Verified Correct Answer: Option D
Step-by-Step Mathematical Solution
Given: L = 8cm, B = 7\(\frac{1}{2}\)cm = 7.5cm, H = 6\(\frac{1}{2}\)cm = 6.5cm
Volume of cuboid = LBH = 8 x 7.5 x 6.5 = 390cm\(^3\) but in m\(^3\) = \(\frac{390}{1000000}\) = 0.00039m\(^3\)
0.00039m\(^3\) = 3.9 x 10\(^{-4}\)m\(^3\)
Source: Myschool Past Questions Archive (Record #42224)
Physics
NECO SSCE 2002
Modern Physics and Nuclear Physics
In an operating X-ray tube, a high p.d is applied between the cathode and the anode for the purpose of
A
accelerating the electrons to a very high energy
B
concentrating electrons on the target
C
heating the anode
D
heating the cathode
E
producing a stream of electrons
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #42857)
Physics
NECO SSCE 2002
Heat Energy & Temperature
The ability of the eye to focus on objects at various distances is known as
A
accommodation
B
astigmatism
C
eye ring
D
myopia
E
presbyopia
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #42858)
Physics
NECO SSCE 2002
Mechanics and Properties of Matter
Solution
An electric heater takes 4A when operated on a 250V supply. What is the cost of the electricity consumed at 10k per kWh when the heater is used for 5 hours?
A
10k
B
50k
C
N1.00
D
N5.00
E
N10.00
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
Electrical power = current x voltage = IV
but I = 4A and V = 250v
P = 4 x 250 = 1000W → 1KW
Electricity consumed = Power x time
= 1 x 5 = 5kwh
but 1kwh = 10k ( given )
cost of electricity consumed for 5hrs = 5 x 10 = 50k.
Source: Myschool Past Questions Archive (Record #42860)
Physics
NECO SSCE 2002
Waves and Optics
An object 8cm in front of a plane mirror moves at a speed of 6cm s-1 away from the mirror. What will be the distance separating the object and the image after 2s?
A
8cm
B
12cm
C
20cm
D
28cm
E
40cm
medium Difficulty
Verified Correct Answer: Option E
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #42861)
Physics
NECO SSCE 2002
Heat Energy & Temperature
Which is a fundamental unit?
A
ampere
B
joule
C
Newton
D
ohm
E
watt
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #42862)
Physics
NECO SSCE 2002
Mechanics and Properties of Matter
The energy stored in a capacitor of capacitance 5 μF is 40J. What is the voltage applied across its terminals?
A
4V
B
8V
C
16V
D
200V
E
4000V
medium Difficulty
Verified Correct Answer: Option E
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option E.
Source: Myschool Past Questions Archive (Record #42863)
Physics
NECO SSCE 2002
Electricity and Magnetism
Which device does NOT make use of the magnetic effects of an electric current?
A
hot-wire ammeter
B
moving-coil ammeter
C
moving-coil loudspeaker
D
moving-iron ammeter
E
telephone earpiece
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #42864)
Physics
NECO SSCE 2002
Heat Energy & Temperature
In the normal use of a simple microscope, a person sees an
A
erect, real and magnified image
B
erect, virtual and magnified image
C
inverted, virtual and magnified image
D
inverted, real and magnified image
E
inverted and real image the same size as the object
medium Difficulty
Verified Correct Answer: Option B
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option B.
Source: Myschool Past Questions Archive (Record #42865)
Physics
NECO SSCE 2002
Mechanics and Properties of Matter
A body of mass 4 kg is accelerated from rest by a steady force of 9N. What is its speed when it has travelled a distance of 8m?
A
6 ms-1
B
18 ms-1
C
32 ms-1
D
36 ms-1
E
48 ms-1
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #42867)
Physics
NECO SSCE 2002
Modern Physics and Nuclear Physics
Solution
A brass cube of side 10cm is heated through 30^\circC. If the linear expansivity of brass is 2.0 \times I0\(^{-5}\) K-1 , what is the increase in its volume?
A
0.06 cm3
B
0.18cm3
C
0.60cm3
D
1.20cm3
E
1.80cm3
medium Difficulty
Verified Correct Answer: Option E
Physical Principles & Numerical Solution
cubic expansivity and γ = 3\alpha. → 3 * 2.0 \times I0\(^{-5}\)
cubic expansivity = 6.0 \times I0\(^{-5}\) , Ø = 30^\circC,
Volume(v\(_1\)) = L\(^3\) = 10\(^3\) → 1000
V\(_2\) = V\(_1\)(1 + γ\theta)
→ V\(_2\) = 1000[1 + 6.0 \times I0\(^{-5}\) * 30]
= 1000[1 + 0.0018]
= 1000 * 1.0018 → 1,001.8
increase in volume = 1,001.8 - 1000
→ 1.8cm\(^3\)
Source: Myschool Past Questions Archive (Record #42868)
Physics
NECO SSCE 2002
Heat Energy & Temperature
Which statement is NOT correct about Rutherford’s model of the atom?
A
The diameter of the nucleus is of the order of 10-15m
B
The mass of an atom is concentrated in the nucleus
C
The model is applicable to atoms with one electron in the outer shell
D
The nucleus of an atom is positively charged
E
The nucleus is surrounded by an electron cloud.
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option C.
Source: Myschool Past Questions Archive (Record #42869)
Physics
NECO SSCE 2002
Heat Energy & Temperature
Solution
In which of the following are the substances arranged in descending order of their thermal conductivities?
A
aluminium, copper, iron
B
aluminium, iron, copper
C
copper, aluminium, iron
D
copper, iron. aluminium
E
iron, copper, aluminium
medium Difficulty
Verified Correct Answer: Option C
Physical Principles & Numerical Solution
metals thermal conductivity( W/mk)
IRON 65.7
COPPER 377
ALUMINIUM 218
THERMAL CONDUCTIVITIES OF Al, Fe, and Cu at 100degree Celsius
Source: Myschool Past Questions Archive (Record #42870)
Physics
NECO SSCE 2002
Heat Energy & Temperature
What part of the camera corresponds to the iris of the eye?
A
diaphragm
B
film
C
focusing ring
D
lens
E
shutter
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option A.
Source: Myschool Past Questions Archive (Record #42871)