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 walls and ceilings of many standard auditoria are covered with perforated pads to
increase the intensity of sound waves
increase the loudness of sound waves
reduce the effect of reverberations of sound waves
increase the interference effect of sound waves
decrease the frequency of sound waves
Correct answer is C
No explanation has been provided for this answer.
Which of the following instruments produces sound by the vibration of air column?
Piano
Guitar
Flute
Hand bell
Talking drum
Correct answer is C
No explanation has been provided for this answer.
2.0cm
3.3cm
5.0cm
10.0cm
15.0cm
Correct answer is B
\(f = \frac{uv}{u+v}\)
\(5 = \frac{-10u}{-10+u}\)
\(50 + 5u = -10u\)
\(50 = -10u - 5u\)
\(u = \frac{50}{-15}\)
u= -3.3cm
18o
34o
45o
68o
90o.
Correct answer is B
No explanation has been provided for this answer.
1.65
1.58
1.52
1.50
1.48
Correct answer is E
No explanation has been provided for this answer.