Give two examples of each of the following :

(a) stringed musical instruments.

(b) wind musical instruments.

(c) membrane musical instruments.

(d) plate type musical instruments.

Name the object (or part) which vibrates to produce sound in the following musical instruments :

(a) Sitar

(b) Dholak

(c) Flute

(d)Cymbals

(e) Veena

(f) Tabla

Name one musical instrument each in which the sound is produced:

(a) by vibrating a stretched string.

(b) by vibrating air enclosed in a tube.

(c) by vibrating a stretched membrane

(d) by vibrating metal plates.

Which of the sounds having the following frequencies can be heard by the human beings and which cannot?

(a) 6 hertz

(b) 5000 hertz

(c) 10000 hertz

(d) 35000 hertz

(e) 18kHz

What is the upper limit of frequency of human hearing?