Physics · Sound Waves

Why are megaphones, loudhailers, and certain horn-shaped musical instruments designed with a long tube followed by a conical opening?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1To absorb unwanted echo reflections within the instrument casing
2To scatter the sound waves equally in all directions behind the speaker
3To decrease the intensity and frequency of the sound waves
4To direct sound waves forward toward the audience by successive reflections without spreading them in all directions✓

Correct answer

To direct sound waves forward toward the audience by successive reflections without spreading them in all directions

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