science
Grade-4-
Easy

Question

A longitudinal wave is produced by the vibration of an object. It travels through a medium such as air by forming alternate regions of compression and rarefaction of air molecules. As a longitudinal wave travels through air, the regions of compression and rarefaction in it can be shown as

hintHint:

Vibration of particles is parallel to the wave propagation.

The correct answer is:


    • Alternate regions of compression and rarefaction of air molecules is shown by pattern given in option c. 
    • Longitudinal waves are waves in which the vibration of the medium is parallel to the direction the wave travels.
    • So, the correct option is c.

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