Physics
Grade-8
Easy
Question
Pressure variations are caused among the particles of the medium when they vibrate _____ the direction of wave propagation.
- In
- At 30-degree angle to
- At 90-degree angle to
- At 135-degree angle to
Hint:
Longitudinal waves are parallel to the direction of wave propagation.
The correct answer is: In
- A longitudinal wave is a type of wave in which the particles of the medium vibrates parallel to the direction of the wave propagation or in the direction of wave propagation.
- Pressure variations are caused in the longitudinal waves in the form of compression and rarefaction.
- So, the correct option is a.
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