Physics
Grade-8
Easy
Question
Which of the following is observed among the particles of a medium when a longitudinal wave propagates through it?
- Pressure variations
- Density variations
- Compressions and rarefactions
- All of the above
Hint:
Longitudinal waves show variations in density and pressure. Transverse waves don't show pressure and density variations.
The correct answer is: All of the above
- A longitudinal wave has pressure and density variations.
- In the form of compressions and rarefactions.
- Compression is the region of high pressure and high density.
- Rarefaction is the region of low pressure and low density.
- So, the correct option is d.
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