A key of a mechanical piano is struck gently and then struck again but much harder this time. In the second case :

Options

A. sound will be louder but pitch will not be different
B. sound will be louder and pitch will also be higher
C. sound will be louder but pitch will be lower
D. both loudness and pitch will remain unaffected

Answer

A

Explanation

When the key of a mechanical piano is struck harder, sound will be louder as it vibrates with greater amplitude but pitch will not be different as it does not depend on how hard the key is struck