Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Physics Waves Traveling Sound Waves
A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case
1
sound will be louder but pitch will not be different
2
sound will be louder and pitch will also be higher
3
sound will be louder but pitch will be lower
4
More than one of the above
5
None of the above