Question

A key of mechanical piano is first struck gently and then struck again but much harder this time. In the second case (a) sound will be louder but pitch will not be different
(b) sound will be louder and the pitch will also be higher
(c) sound will be louder but pitch will be lower
(d) both loudness and pitch will remain unaffected

Answer 1

Answer:

sound will be louder but pitch will not be different (a)

Answer 2

In the second case the sound will be louder but the pitch will not be different.

• A sound's loudness or softness is dictated by its amplitude. The amplitude of the sound wave depends on the vibrating force of an object. We hear a soft sound when we strike a table lightly because we produce a sound wave with less energy (amplitude). Pitch depends on the human ear's pitch.
• In this case the pitch will not change due to the amplitude and not the frequency of the loudness. The pitch depends on the sound's size and it will make its amplitude higher by hitting this fast. But it will be the same frequency.