Marching soldiers crossing a suspension bridge are usually advised to break their steps to avoid damaging the bridge owing to
Aoscillation
Bresonance
Cswinging
Dvibration
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Question 1192
neco2004
A resistor connected in parallel with a galvanometer so that a large amount of current can be measured is called a/an
Aammeter
Bavometer
Ccoil resistor
Dmultiplier
Eshunt.
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Question 1193
neco2004
The relative density of dilute tetraoxosulphate (vi) acid in a battery is measured with a
Abarometer
Bhydrometer
Cmanometer
Dhypsometer
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Question 1194
neco2004
Calculate the energy stored in an inductor of inductance 0.5H when a current of 3A flows through it.
A15.00 J
B9.45 J
C6.00 J
D4.50J
E2.25 J
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Question 1195
neco2004
A ray of light experiences a minimum deviation when passing through an equilateral triangular glass prism. Calculate the angle of incidence of the ray. [Refractive index of glass = 1.5]
A300.0°
B48.6°
C60.0°
D75.5°
E105.0 °
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Question 1196
neco2004
The resultant of two forces P and Q is least when the angle between them is
A0°
B45°
C60°
D90°
E180°
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Question 1197
neco2004
If the distance between the plates of a parallel plate capacitor is decreased, its capacitance
Abecomes zero
Bdecreases
Cincreases
Dis halved
Eremains the same
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Question 1198
neco2004
A radioactive isotope has a half-life of 8 days. What fraction of the atoms will remain after 72 days?
A9.766 × 10-4
B1.736 ×10-3
C1.953 ×10-3
D3.472 × 10-3
E3.906 x 10-3
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Question 1199
neco2004
Which of the following is used as a depolarizer in a Denial cell?
AAmmonium chloride
BCopper (II) tetra Oxo sulphate (VI) solution
CManganese (IV) oxide
DTetraoxo sulphate (VI) acid
EWater
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Question 1200
neco2004
Emission spectra are caused by
Akinetic energy of moving atoms
Bpotential energy of an electron in an atom
Ctransition of an electron from a higher energy level to a lower energy level
Dtransition of an electron from a lower energy level to higher energy level
Etransition of excited protons in the nucleus.
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Question 1201
neco2004
A current flows in a series circuit containing a resistor, R, an inductor, L and a capacitor, C. Which of the following is true of the power dissipated in the circuit component(s)?
AThe power dissipated in L is greater than zero
BThe power dissipated in R is zero
CThe sum of the power dissipated in L and C is equal to that in R
DThe sum of the power dissipated in L and C is greater than in R
EThe sum of the power dissipated in L and C is zero
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Question 1202
neco2004
When the same amount of current, I is passed through different wires under the same conditions, the rates of production of heat are
Adirectly proportional to I
Bdirectly proportional to the resistances of the wires
Cdirectly proportional to the square of the resistances of the wires
Dinversely proportional to I
Einversely proportional to the resistance of the wires
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Question 1203
neco2004
A car travels with a constant velocity of 45 kmh-1 for 20s. What distance does it cover in this time?
A0.025m
B0.250m
C2.500m
D25.000m
E250.000m
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Question 1204
neco2004
Heat
I. is a form of energy
II. is measured with a thermometer
III. cannot be created or destroyed
IV. from a hot object is transferred through conduction only. Which of the statements above are correct?
AI and II only
BI and III only
CI, II and III only
DII, III and IV only
EI, II, III and IV
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Question 1205
neco2004
In which of the following are crystalline structures observable?
I. Gas
II. Liquid
III. Solid
AI only
BII only
CIII only
DI and III only
EII and III only
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Question 1206
neco2004
The rate of diffusion of gases increases with increase(s) in
I. density
II. temperature
III, mass. Which is/are correct?
AI only
BII only
CI and II only
DII and III only
EI, II and III
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Question 1207
neco2004
A stone is dropped from the top of a tower of height 11 .25m. Calculate the time it will take to reach the ground. [g = 10ms-2]
A1.00s
B1.50s
C2.25s
D2.50s
E3.00s
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Question 1208
neco2004
A body has masses of 0.013kg and 0.012 kg in oil and water respectively. If the relative density of oil is 0.875 calculate the mass of the body.
A0.02 kg
B0.03kg
C0.04kg
D0.05kg
E0.06kg
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Question 1209
neco2004
What is the uncertainty in the measurement of time, if the uncertainty in measuring the energy of an electron of mass 10-30 kg is 2.45 × 10-19J? h = 6.6 × 10-34
A1.35 ×10-15s
B2.69 × 10-15s
C4.15 × 10-15s
D9.05 × 10-15s
E1.62 × 10-14s
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Question 1210
neco2004
Calculate the wavelength of light travelling with a speed of 3 × 108ms-1 and a frequency of 6.2 × 1014Hz.
