Question

give two uses of multiple reflection of sound

Answer 1

1) Megaphones and musical instrumentsà Megaphones or loudhailers, horns, musical instruments are all designed to send sound in a particular direction without spreading it in all directions. In these instruments, a tube followed by a conical opening reflects sounds successively to guide most of the sound waves from the source in the forward direction.

2) In stethoscope the sound of a patient's heartbeat is guided by along the tube of the stethoscope to the doctor's ears by multiple reflections of sound.

Answer 2

HERE IS YOUR ANSWER.

the two instruments that works on multiple reflection of sound are bulb horn and megaphone....

Hope it will help you