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.
convection
radiation from the surface
conduction through the stopper and the glass
conduction across the walls
Correct answer is C
No explanation has been provided for this answer.
increase
remain the same
decrease
first decrease and then increase
Correct answer is B
No explanation has been provided for this answer.
39 . 98 x 10-1J
9.75 x 102J
3.98 x 103J
9.75 x 103J
Correct answer is B
Q = mc\(\theta\)
= 0.05 x 390 x (70 - 20)
= 975J
At constant pressure, the density of a fixed mass of gas is
constant with temperature
proportional to its volume
inversely proportional to its temperature
independent of its volume
Correct answer is C
Density = mass/ volume
At constant pressure, volume is directly proportional to Temperature
Density is inversely proportional to the volume at constant mass
At constant pressure, volume = constant x temperature
hence, density = mass/ (constant x temperature)
which shows density is inversely proportional to temperature
One of the most important applications of bi-metallic strip is found in the construction of
a thermostat
an altimeter
a thermocouple
a hydrometer
Correct answer is A
No explanation has been provided for this answer.