Question

Megaphones or loudhailers, horns, musical instruments such as trumpets and shehnais, are all designed to ______.

• A. send sound in a particular direction without spreading it in all directions.
• B. send sound in a particular direction spreading it in all directions.
• C. collect sound from all directions spreading it in all directions.
• D. all of the above

Answer 1

The correct option is A send sound in a particular direction without spreading it in all directions.

Megaphones or loudhailers, horns, musical instruments such as trumpets and shehnais, are all designed to send sound in a particular direction without spreading it in all direction.
In these instruments, a tube followed by a conical opening reflects sound successively to guide most of the sound waves from the source in the forward direction towards the audience.