MCQ Questions

Question No. 1

List two similarities and two differences between a flute and a clarinet.

Answer :

Question No. 2

List two similarities and two differences between a saxophone and a trumpet.

Answer :

Question No. 3

List two similarities and two differences between a guitar and a piano.

Answer :

Question No. 4

A flute is 66 cm long and has six tone holes. When tone holes 4, 5 and 6 are open and all the others closed, the effective length becomes 44 cm. Take the speed of sound to be 340 m/s.

Answer :

a) Calculate the fundamental frequency and the first overtone for this length.

b) How does the fundamental frequency calculated compare with the fundamental frequency when all tone holes are closed? Make an appropriate calculation to support your answer.

c) Make sketches to show the standing waves in the flute for the frequencies calculated in (a).

Question No. 5

A six-string guitar has 19 frets and strings of length 65 cm from the bridge to the nut. The fundamental frequency of the full-length first string is 329.6 Hz.

Answer :

a) Calculate the speed of the waves in the first string when it is vibrating in its fundamental mode.

b) Sketch the standing waves in the string for the first overtone of the first string.

c) The second string is made to resonate with the fundamental frequency of the first string when the second string is fretted at the 5th fret. If the 5th fret is 48.69 cm from the bridge, determine the fundamental frequency of the full-length second string.

Question No. 6

Explain the functions of the following parts of a piano:

Answer :

a) hammer

b) damper

c) sounding board

Question No. 7

Explain the use of echoes in the construction of concert halls.

Answer :

Question No. 8

The distance between the airgun and the hydrophones attached to an oil exploration ship is 150 m. If the sonar waves reflected off the sediments at the bottom of the sea arrive at the hydrophones 2 s after the sonar waves travelling through the air, calculate the depth of the sediments. Take the speed of sound in air to be 330 m/s and in seawater to be 1 500 m/s.

Answer :

Question No. 9

List the parts of a hearing aid and state the function of each part.

Answer :

Question No. 10

Which of the following is (are) woodwind musical instruments? (i) saxophone (ii) clarinet (iii) trumpet

Answer :

(i), (ii) and (iii)

(i) and (ii) only

(i) only

(i) and (iii) only

Question No. 11

The flute is a musical instrument which is:

Answer :

a pipe open at both ends and uses a reed for standing waves

a pipe closed at one end and uses a reed for standing waves

a pipe open at both ends and uses blowing air into an opening for standing waves

a pipe closed at one end and uses blowing air into an opening for standing waves

Question No. 12

The tone holes in wind instruments are used to:

Answer :

change the pitch of the notes by changing the length of the pipes

change the pitch of the notes by changing the width of the pipes

change the intensity of the notes by changing the length of the pipes

change the intensity of the notes by changing the width of the pipes

Question No. 13

The following diagram shows the standing waves formed in a musical instrument of length L (one antinode midway). The instrument is most likely to be a:

Answer :

flute

guitar

trumpet

saxophone

Question No. 14

A guitar string is set into vibration by a guitarist. When the guitarist presses the string near a fret:

Answer :

The length of the string is shortened and the frequency of the note is increased.

The length of the string is increased and the frequency of the note is increased.

The length of the string is shortened and the frequency of the note is decreased.

The length of the string is increased and the frequency of the note is decreased.

Question No. 15

The following adjustments can be made to a drum: (i) Increase the tension of the membrane. (ii) Increase the surface area of the membrane. (iii) Increase the body of the drum. Which will increase the frequency of the notes produced?

Answer :

(i) only

(i) and (ii)

(i) and (iii)

(i), (ii) and (iii)

Question No. 16

Which one of the following is NOT a percussion musical instrument?

Answer :

xylophone

cymbals

bell

tuba

Question No. 17

The note middle C played on a piano always differs from middle C played on a violin because of a difference in:

Answer :

frequency

fundamentals

overtones

wavelength

Question No. 18

Sarki stands some distance from a cliff and blows a whistle. If he hears the echo 3 s later, how far away is the cliff? Take the speed of sound as 0.33 km/s.

Answer :

0.1 km

0.05 km

0.5 km

1 km

Question No. 19

Echo sounding uses lower frequency sonar waves in oil exploration than in sea depth finding because:

Answer :

shorter wavelengths travel long distances in sedimentary rock

longer wavelengths travel long distances in sedimentary rock

larger velocities travel long distances in sedimentary rock

larger intensities travel long distances in sedimentary rock

Chapter

Enter Your Book Codewwww

Enter Your Book Code

Insert 6 Digit Book Code

Enter the code sent to