rarefaction wave sentence in Hindi

Examples

1. This wave moves at the speed of sound through both the intake and tailpipe air masses . ( Because these air masses are significantly elevated in temperature as a result of earlier cycles, the speed of sound in them is much higher than it would be in normal outdoor air . ) When a compression wave reaches the open end of either tube, a low pressure rarefaction wave starts back in the opposite direction, as if " reflected " by the open end.