Musical Instruments

Q.

Why does amplitude increase at resonance?

Q. Identify the musical instruments which produce sound due to the vibration of their strings.

1. Guitar
2. Sitar
3. Violin
4. Flute

Q.

A drum vibrates with a lower frequency than a whistle. Therefore, it produces a _________ sound compared to the whistle.

1. Loud

2. Low pitched

3. Feeble

4. High pitched

Q.

Define the term sound.

Q.

Explain why and how:-

•Tension affects the pitch in string instruments

Q.

The longer the length of a vibrating air column, the ________ the pitch of the sound produced.

Q.

Assertion: Resonance is a special case of forced vibration in which the natural frequency of vibration of the body is the same as the impressed frequency of external periodic force and the amplitude of forced vibration is maximum.

Reason: The amplitude of forced vibrations of a body increases with an increase in the frequency of the externally impressed periodic force.

1. Both assertion and reason are incorrect

2. The assertion is correct but the reason is incorrect

3. Both assertion and reason are correct and the reason is the correct explanation for assertion.

4. Both assertion and reason are correct but the reason is not the correct explanation for assertion.

Q. The harder you beat a table , louder is the sound . List two reasons for it

Q.

Can you listen the sound of a supernova explosion taking place in outer space? Why?

Q.

If tension of membrane of a tabla is increased, its vibration frequency ________________

Q. Which of the following musical instruments is a wind instruments?

1. Flute
2. Piano
3. All of these
4. Drums

Q. Select the odd one out (sitar, guitar, violin, mouth organ)

1. Mouth organ
2. Violin
3. Guitar
4. Sitar

Q.

Most string instruments have an air chamber. Why?

Q. Vocal cords are folds of tissue stretched within the larynx.

1. False
2. True

Q. How Jal Tarang produces sound?

1. In Jal-tarang musical instrument the cup containing minimum water produces the sound of lowest frequency.
2. In Jal-tarang musical instrument the cup containing minimum water produces the sound of lowest pitch.
3. In Jal-tarang musical instrument the cup containing minimum water produces the sound of lowest frequency. As the amount of water in the cup goes on increasing, the frequency of the sound produced also goes on increasing.
4. all of the above

Q. About reverberator furnace

Q. Identify the parts which vibrates to produce sound in following instruments.

Q. The membrane of a drum vibrates to produce sound. Similarly the string of a sitar vibrates to produce sound. Based on these two examples answer the following question. Which part of a whistle vibrates to produce sound?

1. Body of whistle
2. Air
3. Mouth of the person
4. All of the above

Q. Vibration of air column produces sound in which of the following instruments?

1. jaltaranga
2. flute
3. siren
4. all of the above

Q.

In humans, sound produced by the organ named________.

Q. All the stringed instruments produce only harmonics

1. True
2. False

Q. In Dholak sound produce due to which of the following?

1. Stretched membrane
2. Stretched strings
3. Vibration of air
4. Air column

Q. When a flute is blown, the air inside it gets compressed and produces sound but does not vibrate. True or false.

1. True
2. False

Q. What is an elastic materialmedium and why is it required for the propagation of sound waves?

Q. The sketches I to IV in figure show sound waves, all formed in the same time interval. Which diagram shows note from a musical instrument ?

1. III
2. II
3. IV
4. I

Q. How do violin players make musical sounds?

1. By playing keys.
2. By hitting gongs.
3. By blowing on a mouthpiece.
4. By bowing strings.

Q. A wind instrument:

1. Jazz
2. Tabla
3. Saxophone
4. Sitar

Q. How sound is produced in flute or clarinet?

1. Air in the tube vibrates
2. The holes of the flute vibrate
3. Skin of flute vibrates
4. No vibration is produced

Q. Name the characteristic which enables one to distinguish the sound of two musical instruments even if they are of the same pitch and same loudness.

Q. Before playing the orchestra in a musical concert, a sitarist tries to adjust the tension and pluck the string suitably. By doing so, he is adjusting

1. intensity of sound only
2. amplitude of sound only
3. frequency of the sitar string with the frequency of other musical instruments
4. loudness of sound