9 class sound lesson

name

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1. The distance between two consecutive compression or two consecutive rarefaction is--------

• frequency
• wave length
• amplitude
• None

2.The number of compression or rarefaction that cross per unit time-----

• frequency
• Wavelength
• Amplitude
• Time period

3. The magnitude of the maximum disturbance in the medium on either side of the mean value

• frequency
• amplitude
• Wave length
• Time period

4. The loudness or softness of a sound is determined basically by its-----

• Wave length
• Amplitude
• Frequency
• Speed

5.Sound wave cannot propagate in

• Air
• Water
• Vacuum
• Metal

6.Sound wave is

• transverse wave
• longitudinal wave
• both (a)and(b)
• None

7.Identify a wave which is mechanical?

• Radio wave
• light
• Sound
• microwave

8. Echo of sound is due to ------of sound

• Propagation
• reflection
• refraction
• Speed

9.Rolling of thunder is due to -----

• refraction
• dispersion
• reflection
• Successive reflection