Question

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

• A. the intensity of sound only
• B. the amplitude of sound only
• C. frequency of the sitar string with the frequency of other musical instruments
• D. loudness of sound

Answer 1

The correct option is C

frequency of the sitar string with the frequency of other musical instruments

The explanation for the correct option:

(C) frequency of the sitar string with the frequency of other musical instruments

1. The frequency of the sound produced by the string is determined by the length of the string, the tension in the string, and the thickness of the string.
2. As a result, the Sitarist balances frequency with other musical instruments by manipulating the strings of the sitar.
3. Loudness, intensity, and amplitude all refer to the same physical event, and they are affected by how hard you hit the string.

The explanation for incorrect options:

(A) Intensity of sound only

1. The intensity of a sound wave is defined as the amount of sound energy passing through a unit area per second
2. Intensity is measured in Watt per meter square.
3. Intensity is independent of the sensitivity of the human ears.

(B) Amplitude of sound only

1. The amplitude of a sound wave is the measure of the height of the wave.
2. The loudness of a sound wave may be described as the greatest displacement of vibrating particles of the medium from their mean location at the time the sound is generated.
3. It is the distance between the crest or trough of the wave and its mean location.

(D) Loudness of sound

1. Loudness is the reaction of the ear to sound.
2. The amplitude of the sound is exactly proportional to its loudness.
3. The loudness of sound increases as the amplitude of a sound wave increases. The sound will be feeble if the amplitude is small.
4. Loudness is measured in decibels.

Hence, option (C) is correct.