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.
The pressure of a gas when cooled at constant volume will decrease because the molecules
collide less frequently with the walls of the container
have the same average kinetic energy
break up into smaller molecules
decrease in number
Correct answer is A
No explanation has been provided for this answer.
\(\frac{/ - /_o}{/ \Delta t}\)
\(\frac{/ - /_o}{/_o \Delta t}\)
/o(1 + \(\Delta\) t)
\(\frac{/ - /_o}{/(1 + \Delta t)}\)
Correct answer is B
\(\frac{L - L_o}{L_o \Delta t}\)
43.0oC
50.0oC
69.9oC
87.0oC
Correct answer is B
100oC .... 1.05\(\theta\)
\(\theta\)oC .... 0.9\(\theta\)
0oC .... 0.75\(\theta\)
\(\frac{\theta - 0}{100 - 0}\) = \(\frac{0.9 - 0.75}{1.05 - 0.75}\)
\(\theta\) = 50oC
0.05kgm-3
1.25kgm-3
1.30kgm-3
1.36kgm-3
Correct answer is D
Mp = 1 x 40 = 40kg ; mQ = 1.6 x 60 = 96kg
volume of mixture = 40 + 60 = 100m3
mass of mixture = 40 + 96 = 136kg
density of mixture = \(\frac{136}{100}\)
= 1.36kgm3
An inclined plane which makes an angle of 30o with the horizontal has a velocity ratio of
2
1
0.866
0.50
Correct answer is A
V.R = \(\frac{1}{sin\theta}\)
= \(\frac{1}{sin30}\)
= 2