1. The phenomenon of bouncing back of a sound wave from a surface is known as  2025equalincidenceincreasesreflectionSsolidstransversevaccum of sound.
2. The angle of incidence of sound wave is always  2025equalincidenceincreasesreflectionSsolidstransversevaccum to the angle of reflection of sound wave.
3. The incident sound wave, reflected sound wave and the normal to the reflecting surface at the point of  2025equalincidenceincreasesreflectionSsolidstransversevaccum, all lie in the same plane.
4. A musical instrument is producing a continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through  2025equalincidenceincreasesreflectionSsolidstransversevaccum.
5. The sound waves travel fastest in  2025equalincidenceincreasesreflectionSsolidstransversevaccum. (solids / liquids)
6. When the pitch of note produced by a harmonium is loweres, then the wavelength of the note  2025equalincidenceincreasesreflectionSsolidstransversevaccum.
7. The velocities of sound waves in four media P, Q, R and S are 18,000 km/h, 900 km/h, 0 km/h and 1200 km/h respectively. Medium  2025equalincidenceincreasesreflectionSsolidstransversevaccum could be a liquid substance.
8. The speed of a wave is 340 m/s and its frequency is 1700 Hz. The wavelength of this wave is  2025equalincidenceincreasesreflectionSsolidstransversevaccum cm.
9. TV signals from a satellite consists of  2025equalincidenceincreasesreflectionSsolidstransversevaccum waves.
10. If 25 sound waves are produced per second, then the frequency is  2025equalincidenceincreasesreflectionSsolidstransversevaccum hertz.