Physics
Grade-8
Easy
Question
When a longitudinal wave propagates through a medium in a forward direction, the particles of the medium move _____.
- Back and forth
- Up and down
- Sideways
- Both b and c
Hint:
Transverse waves are characterized by the motion of particles of the medium in a direction perpendicular to that of wave propagation.
The correct answer is: Back and forth
- Longitudinal waves cause the medium to move parallel to the direction of the wave.
- In a longitudinal wave, the particles move back and forth about their individual equilibrium positions.
- In transverse waves, the particles move up and down about their individual equilibrium positions.
- So, the correct option is a.
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