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Q.

If a key of a mechanical piano is pressed harder than normal, what will be the effect on the sound?

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a

The sound will be louder with a lower pitch

b

The sound will be louder with a higher pitch

c

The sound will be louder with the same pitch

d

Sound will be louder with a lower frequency

answer is C.

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Detailed Solution

The sound will be louder with the same pitch.
Musical instruments like piano keys are designed to produce a specific frequency. No matter how gently or hardly you press it, there will always produce the sound of the same frequency for which they are designed. Hardly and gently pressing only changes the loudness of the sound. Pitch and frequency remain the same.

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