NATURE OF SOUND SOUND 12 Class 9th Science (Physics) (Practice Sheet) 1 What is the definition of wavelength in sound? A. The loudness of sound B. The speed of sound C. The distance between two consecutive crests or troughs of a sound wave D. The time it takes for one complete vibration of a sound wave 2 Which of the following properties of sound determines its volume? A. Wavelength B. Amplitude C. Frequency D. Speed 3 The number of vibrations per unit time is called: A. Wavelength B. Frequency C. Amplitude D. Speed 4 The speed of sound is fastest in: A. Air B. Water C. Steel D. Vacuum 5 The time taken by a sound wave to complete one vibration is called: A. Wavelength B. Time period C. Frequency D. Amplitude 6 Why the sound waves cannot propagate in the vacuum of space? 7 What is the amplitude of sound waves? 8 Why the speed of sound is more in the solid medium? 9 What is the audible frequency range for human ears? 10 Classify the types of Sound waves. Page 1 Email: Phone No: Website:
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