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.
3m
5m
6m
10m
Correct answer is C
Objects distance (u) = image distance (v)
object distance = 3m
|uv| = 3 + 3 = 6m
4
3
2
1
Correct answer is B
f\(_{0}\) = 40H\(_{3}\)
1st overtone = 2f\(_{0}\) = 80H\(_{3}\)
2nd overtone = 3f\(_{0}\) = 120H\(_{3}\)
3rd overtone = 4f\(_{0}\) = 160H\(_{3}\)
4th overtone = 5f\(_{0}\) = 200H\(_{3}\)
\(\therefore\) Number of overtones between 40H\(_{3}\) and 180H\(_{3}\) = 3
If a sound wave goes from a cold air region to a hot air region, its wavelength will?
increase
decrease
decrease then increase
remain constant
Correct answer is A
No explanation has been provided for this answer.
0.25 x 10\(^{-3}\)rads\(^{-1}\)
0.25 x 10\(^{-1}\)rads\(^{-1}\)
5.00 x 10\(^{2}\)rads\(^{-1}\)
2.50 x 10\(^{3}\)rads\(^{-1}\)
Correct answer is C
Using y = A sin (wt + 0)
Given y = 0.25 x 10\(^{-3}\)sin (500t - 0.025x)
By comparing, w = 5.00 x 10\(^{2}\)rads\(^{-1}\)
\(\frac{8}{33}\)kg
\(\frac{3.3}{80}\)kg
\(\frac{80}{33}\)kg
\(\frac{3.3}{8}\)kg
Correct answer is A
mc\(\Delta\theta\) = m\(\lambda\)f
2 x 400 (100 - 0) = m(3.3 x 10\(^{5}\))
m = \(\frac{2 \times 400 \times 100}{3.3 \times 10^{5}} = \frac{8}{33}\)kg