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.
increases
decreases
increases then decreases
remains constant
Correct answer is D
No explanation has been provided for this answer.
The motion of smoke particles from a chimney is typical of?
random motion
circular motion
rotational motion
oscillatory motion
Correct answer is A
No explanation has been provided for this answer.
0.25Ω
5.00Ω
19.80Ω
0.05Ω
Correct answer is D
R = (igrg)/I-ig = (50 x 10-3 x 5)/5-(50 x 10-3) = (0.25)/4.95 = 0.0505 = 0.05Ω
12.0 V
3.5 V
17.0 V
8.5 V
Correct answer is A
The r.m.s value of an a.c voltage/current is the value of the d.c. voltage/ current that will dissipate the same amount of energy in a given resistance as the a.c. Thus the r.m.s value of the a.c supply is 12v.
1.0 g
0.5 g
3.0 g
2.0 g
Correct answer is D
M = Itz; z = (M)/It = (2)/0.5 x 3 x 60 x 60
= 3.703 x 10-4 gc-1
∴ M = Itz = 1.5 x 1 x 60 x 60 x 3.703 x 10-4
= 1.99962g.
=2.0g