Across
- 4. / String instrument
- 6. / Unpleasant Sounf
- 9. Number of oscillation per second.
- 10. / One complete to and from motion.
Down
- 1. Maximum displacement of particles of medium.
- 2. / Electromagnetic wave.
- 3. Mechanical wave
- 5. period / Time required for one oscillation.
- 7. / S I Unit of Frequency.
- 8. / Reflected Sound.