What do you mean by frequency of a sound wave?
What do you mean by the term frequency of a wave ? State its S.I. unit.
What do you mean by reflection of sound ?
State one condition for the reflection of a sound wave.
Name a device in which reflection of sound wave is used.
What do you mean by the frequency of a sound wave? [1 MARK]
What do you mean by absorption of sound waves?
What do you mean by the reflection of a sound wave?