2002 - JAMB Physics Past Questions and Answers - page 2
11
I. Temperature.
II. Density of air molecules
III. Pressure
IV. Pitch
Which of the above will affect the velocity of sound in the air
II. Density of air molecules
III. Pressure
IV. Pitch
Which of the above will affect the velocity of sound in the air
A
I and II only
B
II and IV only
C
I,II and IV only
D
I,II,III nad IV
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12
Which of the following is a characteristics of stationary waves?
A
They are formed by two identical waves travelling in opposite directions
B
they can be transverse or longitudinal
C
The distance between two successive nodes is one wavelenght
D
The antinode is a point of minimum displacement
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13
To produce an enlarged and erect image with a concave mirror,the object must be positioned
A
at the principal focus
B
beyond the centre of curvature
C
between the principal focus and the centre of the curvature
D
between the principal focus and the pole
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14
the property that is propagated in a traveling wave is
A
frequency
B
amplitude
C
energy
D
wave lenght
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15
Which of the following eye defects can be corrected using a cylindrical lens.
A
myopia
B
Astigmatism
C
Presbyopia
D
Chromatic abiration
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16
The time rate of loss of heat by a body is proportional to the
A
difference in temprature between the body and its surroundings
B
temperature of its surroundings
C
ratio of the temperature of the body to that of its surroundings
D
temperature of the body
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17
If tension is maintained on a stretched string of length 0.6m, such that its fundamental frequency of 220Hz is excited, determine the velocity of the transverse wave in the string.
A
528 ms-1
B
264 ms-1
C
132 ms-1
D
66 ms-1
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18
A concave mirror of radius of curvature 40 cm forms a real image twice as large as the object.
the object distance is
the object distance is
A
10 cm
B
30 cm
C
40 cm
D
60 cm
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19
water is a poor thermometric liquid because it
A
is opaque
B
is a poor conductor
C
wets glass
D
has low vapour pressure
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20
a ray of light which strikes a glass slab from air at normal incidence passes through the slab
A
undeviated and undisplaced at a lower speed
B
deviated and undisplaced at a lower speed
C
deviated and displaced at a lower speed
D
undeviated and displaced at a faster speed
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