# Test: Waves And Sound

12 Questions | Total Attempts: 1434  Settings  Physics is the study of matter and its behavior through space and time along with the energy and force. Waves and Sound are part of it and this quiz tests your knowledge on it.

• 1.
A pendulum completes 75 swings in 25 s. What is its period?
• A.

3.0 s

• B.

3.0 Hz

• C.

0.33 s

• D.

0.33 Hz

• E.

None of the above

• 2.
During complete destructive interference, which of the following could be produced?
• A.

Supercrest

• B.

Node

• C.

Supernode

• D.

Antinode

• E.

Resonance

• 3.
An acoustic guitar contains a sound box that increases the loudness of the sounds the strings make. This is due to the property called
• A.

Amplification

• B.

Refraction

• C.

Reflection

• D.

Resonance

• E.

Interference

• 4.
A three-loop standing wave is generated in a string by attaching one end to a wall and letting the transmitted and reflected waves interfere. If the wavelength of the wave is 15 cm, how far from the wall is the first antinode created?
• A.

3.75 cm

• B.

7.5 cm

• C.

15 cm

• D.

30 cm

• E.

45 cm

• 5.
When two trumpets are played together, 20 beats are heard in 4.0 s. If the frequency of the lower pitched trumpet is 440 Hz, what is the frequency of the higher pitched trumpet?
• A.

460 Hz

• B.

444 Hz

• C.

445 Hz

• D.

520 Hz

• E.

456 Hz

• 6.
The frequency produced by a vibrating string is 800 Hz. What will its frequency be if its tension is quadrupled?
• A.

200 Hz

• B.

400 Hz

• C.

800 Hz

• D.

1600 Hz

• E.

3200 Hz

• 7.
When standing waves are formed on a string fastened at both ends, how many nodes should be present in the third overtone?
• A.

One

• B.

Two

• C.

Three

• D.

Four

• E.

Five

• 8.
An air column closed at one end is vibrating in its third resonant length. If the wavelength of the sound is 80 cm, the length of the air column is
• A.

100 m

• B.

1 cm

• C.

120 cm

• D.

1 m

• E.

1.2 m

• 9.
Waves that are produced on a guitar string by plucking it are
• A.

Sound waves

• B.

Longitudinal waves

• C.

Electromagnetic waves

• D.

Acoustic waves

• E.

Transverse waves

• 10.
What is the frequency of a note that is four octaves lower than 880 Hz?
• A.

55 Hz

• B.

110 Hz

• C.

220 Hz

• D.

440 Hz

• E.

880 Hz

• 11.
When standing waves are formed on a string fastened at both ends, how many nodes should be present in the third overtone?
• A.

1

• B.

2

• C.

3

• D.

4

• E.

5

• 12.
The first and second resonant lengths of an air column that is closed at one end are 15.5 cm and 45.5 cm, respectively. The best value for the wavelength of the wave is
• A.

30 cm

• B.

31 cm

• C.

60 cm

• D.

62 cm

• E.

91 cm

Related Topics Back to top