Question

Assertion: The quantity similar to extension or compression of the spring is the change in density Reason: If a region is compressed, the molecules in that region are packed together, and they tend to move out to the adjoining region, thereby decreasing the density or creating rarefaction

Assertion: Sound wave is an example of longitudinal wave. Reason: In longitudinal waves, the constituents of the medium oscillate perpendicular to the direction of wave propagation.