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SOUND (FULL CHAPTER) | CLASS 9 CBSE,
CHAPTER 12,
9TH PHYSICS,
TYPES OF MECHANICAL WAVES,
TRANSVERSE AND LONGITUDINAL WAVES,
WAVELENTH,
FREQUENCY,
AMPLITUDE,
TIME PERIOD,
WAVE VELOCITY,
ALL FORMULA OF SOUND CHAPTER,
ECHO,
REVERBERATION,
DIFFERENCE BETWEEN,
MELODY AND NOISE,
INTENSITY AND LOUDNESS,
TONE AND NOTE,
APPLICATIONS OF ULTRASONIC SOUND,
SONAR,
NUMERICALS OF SOUND,
ECHOLOCATION,
ULTRASONOGRAPHY