Which one of the following sounds has the highest pitch?

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A guitar

Car horn

Bike horn

Locomotive engine horn

answer is A.

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Detailed Solution

A guitar's sound has the highest pitch.
The frequency of wave vibration determines the pitch of a sound, and if the frequency is higher, we describe the sound as shrill and having a higher pitch. In essence, the guitar has six strings, and as you go lower, the sharpness of each string increases.
On the other hand, the flat pitch and loud noise of car horns can be harmful to anyone's ears. Guitar, therefore, has a higher frequency than a car horn.

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