In a longitudinal wave, the distance between two consecutive …………… is equal to …………… wavelength(s).

1. compressions, one
2. compressions, two
3. crests, one
4. crests, two

Transverse waves can be produced inside :

1. solids
2. liquids
3. gases
4. both (b) and (c)

The maximum displacement of the medium particle on either side of its mean position is called …………… of the wave.

1. frequency
2. time period
3. wavelength
4. amplitude

At compressions, the density and pressure of a medium is ……………, while at rarefactions the density and pressure of a medium is ……………

1. minimum, minimum
2. minimum, maximum
3. maximum, maximum
4. maximum, minimum