FREE Waves And Sound Question and Answers

Question 1

The sound box on an acoustic guitar amplifies the volume of the sounds the strings produce. This results from the quality known as

Accepted Answer

Resonance

Answer

Reflection

Answer

Amplification

Answer

Refraction

Question 2

An air column that is closed at one end has first and second resonant lengths of 15.5 cm and 45.5 cm, respectively. The ideal value for the wave's wavelength is

Accepted Answer

60 cm

Answer

91 cm

Answer

62 cm

Answer

31 cm

Question 3

When you pluck a guitar string, it creates waves that are

Accepted Answer

Transverse waves

Answer

Longitudinal waves

Answer

Electromagnetic waves

Answer

Acoustic waves

Question 4

How many nodes should be present in the third overtone of standing waves created on a string with both ends fastened?

Accepted Answer

Five

Answer

Two

Answer

Four

Answer

Six

Question 5

In 25 seconds, a pendulum makes 75 swings. What time period is it?

Accepted Answer

0.33 s

Answer

3.0 Hz

Answer

3.0 s

Answer

0.33 Hz

Question 6

What note's pitch is four octaves below 880 Hz at what frequency?

Accepted Answer

55 Hz

Answer

110 Hz

Answer

880 Hz

Answer

220 Hz

Question 7

Which of the following could result from completely harmful interference?

Accepted Answer

Node

Answer

Antinode

Answer

Supercrest

Answer

Supernode

The sound box on an acoustic guitar amplifies the volume of the sounds the strings produce.This results from the quality known as

The sound box on an acoustic guitar amplifies the volume of the sounds the strings produce.
This results from the quality known as