Out of the following, which instrument emits a monotone ?

1. guitar
2. flute
3. piano
4. tuning fork

The pitch of a note depends on :

1. frequency
2. amplitude
3. waveform
4. loudness

The quality of a musical sound depends on :

1. number of subsidiary notes
2. relative amplitudes
3. both (1) and (2)
4. none of the above

(a) Which of the following quantity determines the loudness of a sound wave?

(i) wavelength,

(ii) frequency, and

(iii) amplitude.

(b) How is loudness related to the quantity mentioned in the above part (a)