_________ is a device which is based on multiple reflection and isused for sending amplified sound in a particular direction.

Bulb horn

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Megaphone

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Ear trumpet

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all of the above

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Solution

The correct option is D all of the above
All are based on multiple reflection and used for sending amplified sound in a particular direction.

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Similar questions

A device based on multiple reflection used for sending amplified sound in a particular direction is:

What do you mean by reflection of sound ?

State one condition for the reflection of a sound wave.

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