2016 - JAMB Physics Past Questions and Answers - page 4
31
Vapour is said to be saturated on top of an enclosed liquid if _________
A
The rate of condensation is greater than that of vapourization
B
The rate of condensation is equal to that of vapourization
C
There is neither condensation nor vaporization of the liquid
D
The rate of condensation is less that that of vaporization
correct option: b
Users' Answers & Comments32
A pool of water appears to be 1.00m deep when viewed vertically from above. What is the actual depth of the pool?
[Refractive index of water = 1.33]
[Refractive index of water = 1.33]
A
13.300m
B
0.750m
C
1.013m
D
1.330m
correct option: d
n = \(\frac{\text {Read depth}}{\text{Apparent depth}}\) = 1.33 = \(\frac{Rd}{1}\)
Rd = 1.33 x 1 = 1.330m
Users' Answers & CommentsRd = 1.33 x 1 = 1.330m
33
Shadows and eclipse result from the
A
Reflection of light
B
Rectilinear propagation of light
C
Diffraction of light
D
Refraction of light
correct option: b
Users' Answers & Comments34
Which of the following is obtained when a magenta is mixed with green colour?
A
Yellow
B
Blue
C
White
D
Red
correct option: c
Users' Answers & Comments35
Which of the following instruments can be used to measure current in an a.c circuit?
A
Hot wire ammeter
B
Moving coil ammeter
C
Tangent galvanometer
D
Moving coil galvanometer
correct option: d
Users' Answers & Comments36
Which of the following statements about wave motion is correct?
A
Electromagnetic waves are transverse
B
Transverse waves do not require a medium for propagation
C
Longitudinal waves vibrate perpendicular to the direction of travel
D
All mechanical waves are longitudinal
correct option: a
Users' Answers & Comments37
A satellite revolving around the earth is kept on its orbit by
A
Centripetal forces only
B
Centripetal and frictional forces
C
Centrifugal forces only
D
Centripetal and centrifugal forces
correct option: d
Users' Answers & Comments38
A manometer is an instrument used for measuring
A
Relative density of liquid
B
Pressure in liquids and gases
C
Humidity
D
Atmospheric pressure
correct option: b
Users' Answers & Comments39
A body which weighs 50N in air displaces 3.7kg of water when partially immersed in water. Calculate the upthrust on the body?
A
8.7N
B
37.0N
C
87.0N
D
13.0N
40
The impulse of a force is deduced from Newton's second law as
A
F = ma
B
F = m( \(\frac{v - u}{t}\)
C
F = mg
D
F = mv - mu
correct option: b
Users' Answers & Comments