A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case
In SONAR, we use
Sound travels in air if
When we change feeble sound to loud sound, we increase its
In the following curve half the wavelength is
Earthquake produces which kind of sound before the main shock wave begins
Additional Information about Quiz on Chapter – Sound | CBSE Class 9 Physics:
This quiz is based on Exemplar Problems and other questions from the "Sound" chapter of the Physics section in the Science subject for CBSE NCERT Class 9 (IX). These questions cover concepts like the production, propagation, and properties of sound, as well as topics such as reflection of sound, echo, and applications of sound waves. For more such resources, visit the official NCERT website.
