Physics Past Questions

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4,719 questions JAMB 2483 WAEC 1904 NECO 322 CUSTOM 10
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Past Questions

4,719 questions
Question 1 of 20 4,719 total questions
Question 1921
jamb 1992

A note is the octave of another note if it has

Aa frequency twice that of the first note
Bfrequency half that of the first note
Cthe same fundamental frequency as the first one
Da frequency frequency eight times that of the first note
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Question 1922
jamb 1992

Which of the following characteristics of a wave is used in the measurement of the depth of the sea?

Adiffraction
Binterference
Crefraction
Dreflection
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Question 1923
jamb 1992
The equation of a wave is y = 0.005 sin[x(0.5X - 200t)] where x and y are in meters and t is in seconds. What is the velocity of the wave?
A4000ms-1
B400ms-1
C250ms-1
D40ms-1
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Question 1924
jamb 1992
The space between the double glass walls of a thermos flask is evacuated space are silvered. The residual source of heat loss takes place by
Aconvection
Bradiation from the surface
Cconduction through the stopper and the glass
Dconduction across the walls
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Question 1925
jamb 1992
A block of ice floats on water inside a container. If the block of ice gets completely melted, the level of water in the container will
Aincrease
Bremain the same
Cdecrease
Dfirst decrease and then increase
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Question 1926
jamb 1992
How much heat is absorbed when a block of copper of mass 0.05kg and specific heat capacity 390Jkg-1K-1 is heated from 20oC to 70oC?
A39 . 98 x 10-1J
B9.75 x 102J
C3.98 x 103J
D9.75 x 103J
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Question 1927
jamb 1992

At constant pressure, the density of a fixed mass of gas is

Aconstant with temperature
Bproportional to its volume
Cinversely proportional to its temperature
Dindependent of its volume
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Question 1928
jamb 1992
One of the most important applications of bi-metallic strip is found in the construction of
Aa thermostat
Ban altimeter
Ca thermocouple
Da hydrometer
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Question 1929
jamb 1992

A bridge made of steel is 600m long. What is the daily variation in its length if the night-time and daytime temperatures are 10°C and 35°C respectively. The linear expansivity of steel is 0.000012C\(^{-1}\).

A0.18cm
B1.80cm
C18.00cm
D1800cm
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Question 1930
jamb 1992
A platinum resistance thermometer wire has a resistance of 5 ohms at 0oC and 5.5 ohms at 100oC. Calculate the temperature of the wire when the resistance is 5.2 ohms
A80oC
B60oC
C40oC
D10oC
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Question 1931
jamb 1992

If a plastic sphere floats in water (density = 1000kgm3) with 0.5 of its volume submerged, and floats in oil with 0.4 of its volume submerged the density of the oil is

A800kgm3
B1200kgm3
C1250kgm3
D2000kgm3
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Question 1932
jamb 1992

In an experiment to determine Young's Modulus for a wire, several loads are attached to the wire and the corresponding extension measured. The tensile stress in each case depends on the

Aload and the extension
Bload and the radius of the wire
Cradius of the wire and the extension
Dextension and the original length of the wire
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Question 1933
jamb 1992
A machine requires 1000J of work to raise a load of 500N through a vertical distance of 1.5m. Calculate the efficiency of the
A80%
B75%
C50%
D33%
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Question 1934
jamb 1992
A man weight 800N climbs up a stairs to height of 15m in 12.5s. What is the man''s average power output?
A667W
B810W
C960W
D15000W
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Question 1935
jamb 1992
A stone, Q is thrown with velocity U at an angle of 75o to the horizontal. Another stone R is thrown with the same velocity U but with an angle of 15o to the horizontal. The ranges covered by the stones will be
Agreater for Q
Bgreater for R
Cthe same for Q and R
Dgreater for the heavier of the two stones
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Question 1936
jamb 1992

A body starts from rest and moves with a uniform acceleration of 6 ms \(^{-2}\). What distance does it cover in the third seconds

A15m
B18m
C27m
D30m
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Question 1937
jamb 1992

A boy sits in a train moving with uniform speed on a straight track. If from his outstretched palm he gently tosses his coin upwards, the coin will fall

Ain front of his palm
Bbehind his palm
Cbeside his palm
Dinto his palm
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Question 1938
jamb 1992
Which of the following affects the period of a simple pendulum? i. mass of the pendulum bob. ii. length of the pendulum. iii. acceleration due to gravity.
Ai, ii, and iii
Bii and iii only
Ci and iii only
Di and ii only
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Question 1939
jamb 1992

What is the least possible error in using a rule graduated in centimeters?

A0.1cm
B0.5cm
C1.0cm
D2.0cm
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Question 1940
waec 1991
Which of the following has the highest surface tension?
Acold water
Bsoapy water
Cwarm water
Doily water
Esalty water
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