2016 - JAMB Physics Past Questions and Answers - page 2
11
A wire of length 10m is cooled from 50oC to 10oC. Calculate the decrease in the length of the wire. [c = 3 x 10-5K-1]
A
1.8 x 10-4m
B
1.5 x 10-4m
C
1.5 x 10-3m
D
1.8 x 10-3m
correct option: c
Users' Answers & Comments12
When an athlete perspires after running, he loses heat through
A
Evaporation
B
Conduction
C
Radiation
D
Convection
correct option: a
Users' Answers & Comments13
The rate of cooling of a heated quantity of liquid in an enclosure depends on the
A
Pressure of the liquid
B
Temperature in the enclosure
C
Pressure of the enclosure
D
Volume of the liquid
correct option: b
Users' Answers & Comments14
The heat required to raise a mass of a substance through 1K is known as
A
Specific heat capacity
B
Specific latent heat of vaporization
C
Capacity latent heat of fusion
D
Heat capacity
correct option: d
Users' Answers & Comments15
A boy in a barber's shop sits between two parallel mirrors. The number of images observed by him will be
A
Infinite
B
Ten
C
Eight
D
Forty
correct option: a
Users' Answers & Comments16
Semiconductor is a class of solid whose conductivity increases with an increase in
A
Pressure
B
Temperature
C
Current
D
Voltage
correct option: b
Users' Answers & Comments17
Which of the following statements is NOT correct?
A
Brownian motion is an evidence of the particle nature of matter
B
Atoms combine to form molecules
C
The molecules of matter are in constant motion
D
matter is made up of molecules
correct option: c
Users' Answers & Comments18
A dynamo primarily converts
A
Mechanical energy into electrical energy
B
Electrical energy into kinetic energy
C
Potential energy into kinetic energy
D
Kinetic energy into potential energy
correct option: a
Users' Answers & Comments19
A saturated vapour pressure of a liquid increases when the
A
Temperature of a liquid increases
B
Volume of the liquid increases
C
Volume of the liquid decreases
D
Temperature of the liquid decreases
correct option: a
Users' Answers & Comments20
What force has to be exerted on a mass 60kg to give it an acceleration of 10ms-2 vertically upwards?
[g = 10ms-2
[g = 10ms-2
A
300N
B
600N
C
1200N
D
400N