Two cars moving in the same direction have speeds of 100 kmh\(^{-1}\) and 130 kmh\(^{-1}\). What is the velocity of the faster car as measured by an observer in the slower car?
A30 kmh-1
B130 kmh-1
C200 kmh
D230 kmh-1
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Question 902
neco2009
A series RLC circuit is said to resonate, when
Acapacitive reactance is zero
Bconductance is maximum
Ccurrent is minimum
Dimpedance is minimum
Einductive reactance is zero
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Question 903
neco2009
Which of the following types of motion is/are exhibited by a cylindrical drum rolling down an incline plane?
ARandom and rotational
BRotational and oscillatory
CRotational only
DTranslations only
ETranslational and rotational
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Question 904
neco2009
Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is
Aconical
Bcubical
Ccylindrical
Dparabolic
Espherical
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Question 905
neco2009
The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth?
A1.92N
B2.88N
C6.72N
D8.00N
E12.00N
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Question 906
neco2009
Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then
AA and B are equal
BA is greater than B
Cthe angle between A and B is 0°
Dthe angle between A and B is 90°
Ethe angle between A and B is 180°
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Question 907
neco2009
Arrange the following in the order of their increasing frequency.
I. Visible light
II. Gamma rays
III. Radio waves
IV. Infra-red radiation
V. Ultra-violet radiation
AI, II, III, IV, V
BII, III, IV, V, I
CIII, IV, V, I, II
DIV, III, I. V, II
EIII, IV, I,V, II
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Question 908
neco2009
Calculate the work done in charging a capacitor of capacitance 20µF through a potential difference of 1000V.
A0.02 J
B0.10 J
C0.20 J
D1.00 J
E10.00 J
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Question 909
neco2009
The phenomenon of photoelectric effect is used in the following EXCEPT
Aautomatic doors
Bbugler alarm
Celectric fire alarm
Dsound production from film tracks
Etelevision cameras
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Question 910
neco2009
An effort P applied at one end of a crowbar just overcomes the resistance W at the lid of a tin. The mechanical advantage of the crowbar is expressed as
AW + P
BP - W
C\(\frac{w}{p}\)
D\(\frac{p}{w}\)
Ewp
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Question 911
neco2009
Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg-1 . Specific heat capacity of water 4.2Jg-1 K-1]
A840J
B3360J
C3420J
D4200J
E7560J
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Question 912
neco2009
Which of the following pairs of musical instruments produce sound due to the vibration of air column?
ABell and piano
BGuitar and flute
CTrumpet and drum
DTrumpet and flute
EViolin and organ
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Question 913
neco2009
Which of the following statements is correct about light and sound waves? Both
Aare longitudinal waves
Bare transverse waves
Chave the same velocity in air
Dneed a medium for propagation
Etransmit energy
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Question 914
neco2009
A body executing simple harmonic motion has an angular speed of 2π radians. Its period of oscillation is (π 3.14).
A0.05s
B1.00s
C2.00s
D3.14s
E6.28s
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Question 915
neco2009
Which of the following statements about a gas is NOT correct?
AIt has no definite shape
BIt is compressible
CIts molecules are closely packed
DIts molecules gain kinetic energy when heated
EIts molecules move about randomly
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Question 916
neco2009
A sound wave from a ship is received 8.4s later. What is the depth of the sea? [Speed of sound in water 1500ms-1]
A0.179km
B0.357km
C3.150km
D6.300km
E12.600km
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Question 917
neco2009
A body accelerating will have a constant speed if it is
Afalling from a height
Bin equilibrium
Cmoving in a circular path
Dmoving in a straight line
Eoscillating
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Question 918
neco2009
Which of the following statements about water is NOT correct?
APure water freezes at 0°C under normal pressure
BThe volume of a given mass of water at 0° is less than its volume at 4°C
CWater boils at a definite temperature
DWater evaporates at all temperatures
EWater has its maximum density at 4°C
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Question 919
neco2009
Which of the following cells does not require a dipolar for effective and efficient delivery of current?
ADaniel cell
BDry Leclanche cell
CNickel-iron accumulator
DVoltaic cell
EWet Leclanche cell
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Question 920
neco2009
When a resistor of resistance R is connected across a.c. the terminal p.d. of the cell is reduced to three-quarter its e.m.f. The cell’s internal resistance in terms of R is
