A key of a mechanical piano struck gently and then struck again but much harder this time In the sec...

Question

A key of a mechanical piano 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 pitch will also be higher c sound will be louder but pitch will be lower d both loudness and pitch will remain unaffected

Accepted Answer

Answer is a sound will be louder but the pitch will not be different Explanation Pitch depends on the frequency particular key and loudness depends on force by which key is pressed

NCERT Exemplar Solutions Class 9 Science Solutions for Sound - Exercise in Chapter 12 - Sound