Question 1 Why we do not hear the screams of a bat? Question 2 What is the name of very high frequency sound which cannot be heard by human ears? Question 3 What is an audible sound? Question 4 What is an inaudible sound? Question 5 State few uses of ultrasound? Question 6 What is ultrasound? Question 7 What is the upper limit of frequency of human hearing … [Read more...] about Audible and Inaudible sound
ultrasonic sound
Reverberation
Question 1 Define the term reverberation? Question 2 What is a megaphone.Name the principle on which a megaphone work? Question 3 What is a stethoscope.Name the principle on which a stethoscope work? Question 4 What is a soundboard.Name the principle on which a soundboard work? Question 5 Why are the ceiling of concert halls made curved? Question 6 How can we … [Read more...] about Reverberation