Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
heating the bar to a high temperature
breaking the bar
connecting opposite poles with a small piece of iron
placing the bar inside a strong magnetic field
none of the above
Correct answer is A
No explanation has been provided for this answer.
What are the units of thermal conductivity?
kg.m.sec2
Joule sec-1m-1k-1
kg.m
Newton sec-1m2
m3
Correct answer is B
No explanation has been provided for this answer.
the cross-sectional area of the tube
the atmospheric pressure
the density of mercury
the temperature of mercury
the acceleration due to gravity
Correct answer is A
No explanation has been provided for this answer.
N5.70
N7.23
N3.65
N8.05
N4.50
Correct answer is A
Total power = (8 x 40) + (4 x 60) + (2 x 100)
= 760W
Energy(Kwhr) = power x time
= 760 x 10-3 x 150
= 114kwhr.
If, 1kwhr. cost 5k
thus, 114 kwhr. will cost 5 x 114
= N5.70
a larger number of turns in the coil
a thinner suspension with a small torsional control
a special alloy permanent magnet which gives a high magnetic flux
all of the above
a light source with a greater intensity
Correct answer is D
No explanation has been provided for this answer.