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Physics
NECO SSCE 2005
Heat Energy & Temperature
The mercury column in a simple mercury barometer is of height 5m above the mercury in a reservoir. If the tube is replaced with one whose radius is twice that of the first tube, what will be the height of the mercury column in the new tube?
A
2.5m
B
5.0m
C
7.5m
D
10.0m
E
20.0m
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 #43017)
Physics
NECO SSCE 2005
Mechanics and Properties of Matter
The escape velocity of an object from the gravitational field of a planet
I. Increases with the mass of the object
II. Increases with the mass of the planet
III. Is smaller on the moon than on the earth. Which of the above statements is/are correct?
A
I only
B
II only
C
I and II only
D
II and III only
E
I, II and III
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #43018)
Physics
NECO SSCE 2005
Mechanics and Properties of Matter
Solution
Which of the following is a non-renewable energy source?
A
Coal
B
Hydro
C
Ocean waves
D
Solar
E
Tides
medium Difficulty
Verified Correct Answer: Option A
Physical Principles & Numerical Solution
Most non-renewable energy sources are fossil fuels: coal, petroleum, and natural gas
Source: Myschool Past Questions Archive (Record #43019)
Physics
NECO SSCE 2005
Heat Energy & Temperature
Which of the following is NOT a component of an a.c. generator?
A
Armature
B
Carbon brushes
C
Magnet
D
Slip ring
E
Split rings
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 #43020)
Physics
NECO SSCE 2005
Mechanics and Properties of Matter
An object of mass 5.0 cg moving with a velocity of 12ms-1 due north hits a stationary body of mass 7.0kg. If they stick together after collision and move with velocity V due north, calculate the magnitude of V.
A
12ms-1
B
7ms-1
C
6ms-1
D
5ms-1
E
4ms-1
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #43021)
Physics
NECO SSCE 2005
Mechanics and Properties of Matter
Which of the following statements is/are correct in any machine?
I. The velocity ratio is usually greater than the mechanical advantage.
II. Efficiency work inputwork outputIII. The velocity ratio is independent of friction.
A
I only
B
III only
C
I and II only
D
I and III only
E
II and III only
medium Difficulty
Verified Correct Answer: Option D
Physical Principles & Numerical Solution
No expanded working has been attached for this question yet. The verified answer is Option D.
Source: Myschool Past Questions Archive (Record #43022)
Physics
NECO SSCE 2005
Heat Energy & Temperature
Which of the following is a percussion Instrument?
A
Flute
B
Guitar
C
Piano
D
Trumpet
E
Xylophone
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 #43023)
Physics
NECO SSCE 2005
Modern Physics and Nuclear Physics
Which of the following is used for shielding radioactive fallout?
A
Aluminum
B
Lead
C
Iron
D
Plastic
E
Wood
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 #43024)
Physics
NECO SSCE 2005
Electricity and Magnetism
The charge of an alpha particle can be neutralized by
A
1 beta particle
B
2 photons of gamma rays
C
2 beta particles
D
4 beta particles
E
4 photons of gamma rays
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 #43025)
Physics
NECO SSCE 2005
Heat Energy & Temperature
Which of the following statements is correct?
A
Alpha particles have a large mass and high penetrating power
B
Alpha particles have a small mass and a low penetrating power
C
Beta partials have no mass and a high penetrating power
D
Beta particles have a large mass and a low penetrating power
E
Gamma rays have no mass and a high penetrating power
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 #43026)
Physics
NECO SSCE 2005
Waves and Optics
Which of the following will reduce the frequency of oscillation of a simple pendulum?
A
Decreasing the length of the string
B
Increasing the amplitude of oscillation
C
Increasing the length of the string
D
Increasing the mass of the bob
E
Reducing the mass of the bob.
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 #43027)
Physics
NECO SSCE 2005
Mechanics and Properties of Matter
A box is pulled a distance s along a smooth horizontal floor by a force of magnitude F, inclined at an angle θ to the horizontal. The work done is
A
Fs cos θ
B
Fs cosec θ
C
Fs sec θ
D
Fs sin θ
E
Fs tan θ
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 #43028)
Physics
NECO SSCE 2005
Waves and Optics
Solution
A radio station broadcasts at a frequency of 400 kHz. If the speed of the wave is 3.0 \times10\(^{-8}\)ms\(^{-1}\), calculate the wavelength of the radio wave.
A
1.3 × 102m
B
3.0 × 102m
C
2.4 × 102m
D
5.0 × 102m
E
7.5 × 10-14m
medium Difficulty
Verified Correct Answer: Option E
Physical Principles & Numerical Solution
To calculate the wavelength of a radio wave, we use the formula:
\(\lambda = \frac{v}{f}\)
where:
- \( v \) is the speed of the wave,
- \( f \) is the frequency.
Given:
- Frequency \( f = 400 \, \text{kHz} = 400 \times 10^3 \, \text{Hz} \)
- Speed \( v = 3.0 \times 10^{-8} \, \text{m/s} \)
Substituting the values into the formula:
\(\lambda = \frac{3.0 \times 10^{-8} \, \text{m/s}}{400 \times 10^3 \, \text{Hz}}\)
Calculating:
\(\lambda = \frac{3.0 \times 10^{-8}}{4.0 \times 10^5}\)
\(\lambda = 7.5 \times 10^{-14} \, \text{m}\)
Thus, the wavelength of the radio wave is:
\(\lambda = 7.5 \times 10^{-14} \, \text{m}\)
Source: Myschool Past Questions Archive (Record #43029)
Physics
NECO SSCE 2005
Waves and Optics
Which of the following is/are longitudinal wave(s)?
I. Light waves from the sun
II. Sound waves in the air
III. Waves on a vibrating string
A
I only
B
II only
C
I and II only
D
I and III only
E
II and III only
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 #43030)
Physics
NECO SSCE 2005
Thermal Physics
Which of the following radiations has the shortest wavelength?
A
Infrared rays
B
Light waves
C
Microwaves
D
Ultraviolet rays
E
X-rays
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 #43031)